Protect Office 365 with Security Gateway for Email

At about this time last year, Office 365 had around 155 million users, and businesses continue to adopt its services at a rate of around 3 million users per month. But as subscription rates continue to grow, it becomes a growing target for cybercriminals to spread phishing and ransomware attacks.

A big drawback of such a large hosted service is that if cybercriminals manage to take over one of its accounts, it can be used to spread thousands of phishing attacks. And because these attacks are sent from a legitimate Office 365 account, they are likely to get past Microsoft’s Exchange Online Protection (EOP) and Advanced Threat Protection (ATP).

To combat these growing threats, businesses are turning to third-party email security gateways, and there are plenty of them out there with a relatively standard set of anti-spam and anti-phishing features, so to stand out from the competition, a solid email filtering solution must be easy to use while providing additional features such as archiving, compliance, and reporting.

For businesses on Office 365, Security Gateway offers stronger protection against email-borne threats, with account-verification controls tailored specifically for Office 365 to ensure that only authorized users are permitted to send or receive email.

Of course, Security Gateway does much more than protect your users from spam & phishing. It also includes built-in archiving with retention policies and legal hold for businesses that must meet legal compliance laws or that want a backup & recovery solution for a little peace of mind in the event of an outage or security breach.

Security Gateway also includes Data Leak Prevention (DLP) to prevent sensitive business data such as Social Security Numbers, Tax-ID Numbers, banking info, and much more from getting into the wrong hands. Messages containing confidential data can be encrypted using the built-in email encryption options, or sent to the administrative quarantine for further review.  After all, all it takes is a quick Google search to find a list of companies that have suffered steep fines, lost customers, and a damaged reputation due to sensitive data getting exposed.

We know you have choices with your email security solution. At MDaemon Technologies, our team of experts have been in the email security business for over 25 years. And while we have the resources and vision to address emerging messaging, collaboration and security needs into the future, our team is small and agile enough to build relationships with our customers for that personal touch that you just can’t get from a large company.

Try Security Gateway for free, or sign up for hosted email security services at SecurityGateWayForEmail.com.

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10 Tips to Identify a Phishing Email

Don’t Risk Losing your Life Savings to Scammers. Follow these 10 Tips to Identify a Phishing Email.

Whether you run a Fortune-500 organization or a small boutique, by now you should be aware of the threats posed by cyber criminals to trick you into clicking a link, downloading an attachment, or parting ways with your money.

Modern day email scams are getting more sophisticated, leading to staggering losses for businesses of all sizes. According to the 2018 Verizon Data Breach Investigations Report, phishing was used in 93% of all reported breaches, with email being the main attack vector in 96% of reported cases.

While these figures are staggering, they continue to rise as scammers reap huge payouts from BEC (Business Email Compromise), CEO fraud and other phishing scams.

The real estate industry is a prime target for phishing because large sums of money change hands and there are various weak links in the transaction process. If any step within the transaction process becomes compromised with a successful phishing email, the attacker could gain access to a legitimate email address from which to launch other attacks. The fraudster could then lie in wait, scanning email messages for financial or transaction related details, and then send off fraudulent wire transfer instructions to an unsuspecting buyer, seller, or agent. For example, this happened to a 31 year-old first-time home buyer in San Antonio, Texas. You can read details about this case here, but the short version of the story is that she felt that she was in a time crunch to send in her down payment and finalize other closing tasks, and felt that the title company was dragging its feet. This state of high anxiety made her a prime target for a phishing email she received stating that she had previously been given the wrong wire transfer information, and that she needed to wire her down payment to a new account. With 5 hours left to get everything done, she attempted to contact her title company to confirm the change, but no one responded, so in a panic, she hastily ran to the bank and wire transferred her $52,000 down payment. Unfortunately, she sent her life savings to scammers.

The phishing industry is so lucrative for scammers because the barriers to entry are low relative to potential huge payouts. With botnets-for-hire and Malware as a Service (Maas), spammers have an impressive arsenal of tools at their disposal to propagate their campaigns, so to fight this scourge, an educated user is the best defense against phishing scams. With this in mind, here are my top 10 tips on how to identify and protect yourself from phishing attacks.

  1. Watch out for messages disguised as something expected, like a shipment or payment notification. These often contain links to malware sites. Hover your mouse over any links to make sure they’re safe. Think before you click! Here’s an example using a phishing email I received claiming to come from HSBC.

    Payment notification phishing email
    Watch for unexpected payment or shipment notices
  2. Watch for messages asking for personal information such as account numbers, Social Security numbers, and other personal information. Legitimate companies will never ask for this over email.
  3. Beware of urgent or threatening messages claiming that your account has been suspended and prompting you to click on a link to unlock your account.
  4. Check for poor grammar or spelling errors. While legitimate companies are very strict about emails they send out, Phishing emails often contain poor spelling or grammar.
  5. Hover before you click! Phishing emails often contain links to malware sites. Don’t trust the URL you see! Always hover your mouse over the link to view its real destination. If the link claims to point to a known, reputable site, it’s always safer to manually type the URL into your browser’s address bar.
  6. Check the Greeting – Is the message addressed to a generic recipient, such as “Valued customer” or “Sir/Madam?” If so, be careful & think twice! Legitimate businesses will often use your real first and last name. In our HSBC example, notice the generic greeting.

    Watch for generic greetings in email messages
    Watch for generic greetings in email messages
  7. Check the Signature – In addition to the greeting, phishing emails often leave out important information in the signature. Legitimate businesses will always have accurate contact details in their signature, so if a message’s signature looks incomplete or inaccurate, chances are it’s spam. In our HSBC example, the sender’s name and contact information are missing from the signature.

    Watch for generic signatures in phishing email messages.
    Watch for generic signatures in phishing email messages.
  8. Don’t download Attachments – With the proliferation of Ransomware as a Service (Raas), spammers have an easy mechanism for distributing malware-laden spam messages to thousands of users. And because the payout for ransomware can be quite high, even one successful ransomware infection could net the spammer large amounts of money. If there’s ANY doubt about the identity of the message sender or the contents of an attachment, play it safe and don’t download the attachment.
  9. Don’t trust the From address – Many phishing emails will have a forged sender address. The From address is displayed in two places. The Envelope From is used by mail servers to generate NDR messages, while the Header From is used by the email client to display information in the From field. Both of these headers can be spoofed. MDaemon Webmail has built-in security features to help users identify spoofed emails. Many mail clients hide the From address, only showing the From name, which can be easily spoofed. In MDaemon Webmail, the From address is always displayed, giving users a clearer view into the source of the email and helping them identify spoofed senders. Using our HSBC example, I’ve highlighted the actual sender.
    Phishing email highlighting the actual sending address
    Phishing email highlighting the actual sending address

    MDaemon Webmail will also display information in the Security tag to help users identify messages from verified senders, as shown here.

    MDaemon Webmail - DKIM-Verified Sender
    MDaemon Webmail – DKIM-Verified Sender
  10. Don’t Enable Macros – And while we’re on the subject of ransomware, another common vector for ransomware infections is through macros in Microsoft Word documents. These documents often arrive in phishing emails claiming to have important content from HR, Finance, or another important department, and to trick the user, they request the user to enable macros. Never trust an email that asks you to enable macros before downloading a Word document.

While anti-spam and anti-malware tools are quite effective at filtering out the majority of scams, there’s really no substitute for good old-fashioned user education. Know the potential costs to your business and don’t become the next victim!

If you’re the MDaemon or SecurityGateway administrator and need help with your security settings to help block as much phishing as possible before it reaches your users, give us a call or drop us an email support request.

 

 

 

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10 Ways to Reduce Spam in Your Inbox

SpamBefore the invention of email, mail that arrived in your physical mailbox often contained pamphlets, sales brochures, credit card offers, and product catalogs. Much of this waste was thrown away and ended up in a landfill somewhere. Today, the equivalent and often more annoying nuisance is spam. Spam comes in many forms, and has evolved from dubious product claims, miracle supplements, conspiracy theories, and offers of easy money to more malicious threats such as ransomware attacks and targeted spear-phishing.

While the amount of spam as a percentage of total email traffic has gone down recently, the severity of email-borne  threats has increased.

So how can users protect themselves from becoming the next victim to these malicious threats? There are numerous spam fighting tools in MDaemon and other mail servers, but server-side tools are only half of the spam-fighting equation. The other half is user education. With this in mind, here are 10 things users can do to reduce the amount of spam they receive.

  1. Unsubscribe – How often have you been asked by a store clerk for your email address or placed an order online? In either of these situations, chances are you may have ended up on a company’s mailing list. When you receive email from these companies, take the time to open the message and click on the Unsubscribe link. But first, make sure the email is in fact coming from a reputable company (Here’s how). If you’re not completely sure where the email came from, then report the message as spam instead of unsubscribing.
  2. Create a secondary email account – While we’re on the topic of retailers having your email address, you might also consider having a second email address that’s used solely for the purpose of store records or placing orders. This allows you to keep solicitations from these vendors out of your primary inbox.
  3. Keep your email address private – If your email address is visible on social networking sites like Facebook or Twitter, then it’s also visible to spammers. Spammers have tools that can easily detect visible email addresses and add them to their mailing lists. This is why it’s often recommended that, if you MUST use your email address on one of these sites, you mask it by changing its format. For example, type out “at” instead of using the “@” symbol. With the prevalence of Business Email Compromise (BEC) attacks, it’s even more important for executives to be mindful of posting their email address or other personal information, as scammers will use this information to send out well-crafted spear-phishing emails.
  4. Before you join a mailing list, make sure the list owner cannot sell your email address – If the list you’re joining has a privacy policy, read it thoroughly and make sure your information cannot be sold to a third party.
  5. Don’t reply to ANY spam or unsolicited marketing messages – Most spam messages use forged sender (return-path) addresses, so replying to a spam message will almost never result in the spammer getting your message. Replying to legitimate marketing messages tells the sender that your email address is valid, and thus, they may continue to send you spam.
  6. Never click on links – Often, when you click on a link in a spam email, it specifically identifies you to the spammer as having received the message. Not only can clicking links in spam messages identify you to the spammer; you can also end up getting infected with malware.
  7. Block Images – Even if you don’t click any links, an image opening in your email can alert spammers to a valid address. Spammers often try to be stealthy by inserting images that are only one pixel wide. If your mail client is configured to automatically open images, spammers can be alerted that your email address is valid. We recommend configuring your email client to automatically block images to reduce spam. You can always choose to view images in specific emails if you are sure the sender and content are legitimate.
  8. Make your email address unique – Spammers often use common names to try to guess email addresses. If your email address is unique, it makes it harder for spammers to guess your email address.
  9. Don’t fall for scams – If you receive an anonymous email from someone who appears to be in dire need, who promises you large sums of money for your small up-front investment, you may be witnessing the familiar Nigerian email scam, or one of many other variants. What are the odds that someone you’ve never met, who’s in a desperate situation, would contact you for help? Don’t fall for this scam.
  10. Never forward email from someone you don’t know – I often see email messages with some type of public service announcement, petition, or other bit of advice, and often, there’s a request to forward the message to your friends. Don’t fall for this, as it’s a prime opportunity for spammers to harvest email addresses.

Blocking junk email is not just the job of the mail server administrator. A well-informed email user can mean the difference between spam that is manageable and spam that is out of control. These ten tips will help you reduce spam, and help prevent you from becoming a victim to phishing or malware.

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SecurityGateway saves administrators time by letting users manage their own quarantines!

Email spam quarantine

You’ve probably heard that the vast majority of  all email traffic is spam, but did you know the volume of spam as a percentage of all email traffic has gone down over the years? In April of 2014, spam made up almost 70% of all email traffic. The most recent records show spam at about 59% of all email traffic. While these numbers are down slightly, they are still quite significant, and thus email providers need to be armed with a variety of tools to combat spam.

For email administrators, one of the challenges of fighting spam is balancing tasks performed by the administrator with tasks that users can perform to take some of the workload from administrators. With SecurityGateway’s quarantine management features, users can be granted permissions to manage their own quarantines.

SecurityGateway can be configured to handle spam in various ways. Messages can be refused, quarantined, or accepted, and their spam scores can be adjusted accordingly. When messages are quarantined and held on the server, the administrator can determine whether, and how often, to send the user an emailed quarantine summary report. The administrator can also grant users permissions to view and manage their own quarantine folders in the SecurityGateway interface. The quarantine summary email allows users to release the message from quarantine, and whitelist or blacklist the sender. When the quarantine is viewed in the SecurityGateway interface, users have additional options, such as the ability to feed messages to SecurityGateway’s Bayesian spam learning engine. Giving users the ability to manage their own quarantines allows administrators to focus on other tasks.

We generally recommend using the Bayesian feature to mark a message as spam, rather than blacklisting the sender. Thus, to avoid any confusion, we’ve put together the following best practices guide on quarantine management in SecurityGateway.

Click here to view the new SecurityGateway Quarantine Management guide.

Following the suggestions outlined in this guide will help ensure that you receive the messages you want, and block the messages you don’t want.

If you have questions, let us know in the comments section below!

 

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Block Incoming Connections by Country with MDaemon’s New Location Screening Feature

Block connections by country with Location Screening
Block connections by country with Location Screening

As I announced recently in this post, MDaemon 17.5 has been released, with new security and collaboration features. One feature that our users will find particularly useful is the new Location Screening feature, which allows administrators to block incoming connections from specific countries. When you consider the scale and widespread distribution of global threats, blocking connections by country can provide the following benefits:

New spam domains, email zombies & phishing sites pop up all over the world every day. In fact, Cyren’s World Threat Map displays a handy visual representation of newly-discovered threats in real-time.

So if you know your company does not do business with certain countries, you can add these locations to MDaemon’s Location Screening feature and stop all traffic from these countries.

In previous versions of MDaemon, the best way to block connections by country was to use the DNS-BL feature, but with MDaemon 17.5, a new, intuitive check-box screen was added.  In this tutorial video, I show you how easy it is to configure Location Screening in MDaemon.

Do you have questions or feedback? If so, click on the “Leave a Comment” link under the title of this post & let us know!

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With today’s massive ransomware outbreak, here are a few reminders of how to avoid becoming a victim.

RansomwareAs I was coaxing myself awake this morning with my usual jolt of strong coffee, I checked my favorite news sites & was informed of yet another ransomware attack. This one, which is believed to have originated from Ukraine, was first thought to be a variation of last year’s Petya ransomware outbreak, but upon further investigation, it appears that today’s malware is a new type – a worm that some computer experts are referring to as “NotPetya“. This attack demands a smaller ransom (in comparison to other attacks) of approximately $300, and then begins to serve its primary purpose – to wipe files on the computer. According to researchers at Symantec, this attack used the same National Security Agency hacking tool, Eternal Blue, that was used in the WannaCry outbreak, as well as two other methods to spread the attack. According to information provided by this article on CNN, if you’ve installed all of the latest Windows patches, you should be safe from this particular strain of malware, however, by no means is this a reason to be complacent. Administrators and end users must still be mindful of safety precautions.

Due to the proliferation of Malware as a Service (MaaS), just about anyone with the desire and the funds can initiate a malware attack, making new & emerging threats a real concern for the foreseeable future. This presents a good opportunity to review best practices for avoiding ransomware – for end users, and for administrators via the tools available in MDaemon and SecurityGateway.

How can end users protect themselves from ransomware?

End users should be aware of the following 18 email safety tips, which originally appeared in this post.

  • Change your password often.
  • Use strong passwords. Never use a password that contains “password” or “letmein”.
  • Use a different password for each of your accounts. If you use the same password for your bank account as you do for your email account, you become much more vulnerable to data theft.
  • Don’t open an attachment unless you know who it is from & are expecting it. Many of today’s social engineering tactics rely on the ability to trick users into opening attachments.
  • Be cautious about email messages that instruct you to enable macros before downloading Word or Excel attachments. This article provides a good overview of why you should not enable macros in Microsoft Word.
  • Use anti-virus software on your local machine, and make sure it’s kept up-to-date with the latest virus definitions.
  • If you receive an attachment from someone you don’t know, don’t open it. Delete it immediately.
  • Learn how to recognize phishing
    – Messages that contain threats to shut your account down
    – Requests for personal information such as passwords or Social Security numbers
    – Words like “Urgent” – false sense of urgency
    – Forged email addresses
    – Poor writing or bad grammar
  • Hover your mouse over links before you click on them to see if the URL looks legitimate.
  • Instead of clicking on links, open a new browser and manually type in the address.
  • Don’t give your email address to sites you don’t trust.
  • Don’t post your email address to public websites or forums. Spammers often scan these sites for email addresses.
  • Don’t click the “Unsubscribe” link in a spam email. It would only let the spammer know your address is legitimate, which could lead to you receiving more spam.
  • Understand that reputable businesses will never ask for personal information via email.
  • Don’t send personal information in an email message.
  • Don’t reply to spam. Be aware that if you reply to a spam email, your reply most-likely will not go back to the original spammer because the FROM header in the spam message will most-likely be forged.
  • Don’t share passwords.
  • Be sure to log out.

How can administrators protect their systems from ransomware?

The battle against ransomware cannot be fought by users alone. Administrators must also take steps to lock down their email infrastructure. These best practices will help protect your network and users.

Best Practices for MDaemon Administrators

  1. Enable account hijack detection. This feature will automatically disable an account if a designated number of messages are sent from it via an authenticated session in a given period of time. When the account is disabled, the administrator receives a notification so that corrective action can be taken. Instructions for configuring account hijack detection can be found in this knowledge base article.
  2. Enable dynamic screening. Dynamic screening is a feature that blocks future connections from a connecting server or client based on its behavior.  Instructions for configuring dynamic screening can be found here.
  3. Configure the IP Shield. The IP Shielding feature allows administrators to assign an IP address (or IP address range) to email messages from a given domain. Messages claiming to come from a specific domain must originate from one of the approved IP addresses. Exceptions can be made for users connecting from outside of the network who are using SMTP authentication.  Click here for instructions.
  4. Require SMTP Authentication. This helps ensure that the user authenticates with a valid username and password. Instructions can be found here.
  5. Use DKIM & SPF to detect spoofing. DKIM uses a private/public key pair to authenticate a message. When an incoming message is signed with DKIM, a DNS record lookup is performed on the domain taken from the signature and the private key taken from the signature is compared with the public key in the domain’s DNS records. SPF uses a DNS record that lists hosts that are allowed to send mail on behalf of a domain.
  6. Enable DMARC & configure your DMARC record. DMARC (Domain-Based Message Authentication, Reporting & Conformance) allows domain owners to instruct receiving servers on how to handle messages claiming to come from their domain that did not pass DKIM and SPF lookups.  Learn more here.
  7. Ensure that all connections (SMTP, POP, IMAP), are using SSL. SSL (Secure Sockets Layer) is a method for  encrypting the connection between a client and server, as well as between to servers. Learn more here.
  8. Have a backup strategy. If by chance malware still manages to infect your network, your last resort is to have a reliable backup strategy. Ideally, you should have your systems backed up off-site and, for added safety, secondary backup data should be saved to media that is not connected to the network.

More information on these settings can be found in the following guide on best practices for protecting your users:

Email Server Settings – Best Practices

Best practices for SecurityGateway administrators

SecurityGateway provides an extra layer of anti-spam, anti-spoofing and anti-malware security, in addition to your mail server’s built-in security settings. These best practices will help keep ransomware and other malicious content from reaching your mail server. Each item includes a link with more information.

  1. Require strong passwords.
  2. Query a user verification source to ensure that users are valid.
  3. Require SMTP authentication to prevent unauthorized account access.
  4. Prevent unauthorized mail relaying.
  5. Protect your domain with IP Shielding.
  6. Require SSL encrypted connections.
  7. Configure backscatter protection.
  8. Don’t whitelist local addresses. If a spam messages was spoofed with one of your local addresses, this could allow the spam message to bypass various security features. This why it is recommended that no local addresses be added to your whitelist.
  9. Enable spam & virus Outbreak Protection.

These steps are discussed in more detail in the following guide:

SecurityGateway – Settings to Protect Your Mail Server

Of course, no system is 100% fool-proof, which is why user education is so important. Remember – your network and email infrastructure are only as secure as their weakest link. It is the responsibility of all parties involved – administrators and end users, to help ensure a secure messaging and collaboration environment.

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Is spam being sent out from a local machine on your network? Follow these steps to track down a spambot.

Has this happened to you? Let’s say you’re the MDaemon administrator for your company, and you’ve noticed that somewhere, somehow, spam messages are being sent from within your network. Perhaps one of your PCs has been compromised. What do you do? Here are some tips to help you track the issue down.

First, make sure you have the option “Authentication is always required when mail is from local accounts” enabled (Security | Security Settings | SMTP Authentication). Also enable “Credentials used must match those of the return-path address” and “Credentials used must match those of the From header address.” Then, make sure “…unless message is sent to a local account” is unchecked to prevent intra-domain spam (between local domain users).

SMTP Authentication in MDaemeon
Make sure the appropriate boxes are checked to require SMTP authentication

Next, find out if the spam messages are coming in from an authenticated session. To do this, locate one of the spam messages & open it up in Notepad to view its headers (or you can open it in Queue & Statistics Manager). Does the message have an X-Authenticated-Sender header? It will look something like this:

X-Authenticated-Sender: SpammerUser@example.com

If this header is present, then that is the user who authenticated to send the message. The first thing you should do in this case is to change the account’s password via the Accounts menu in MDaemon. Even if the spamming is going through the user’s mail client, until you give the user the new password and they update their mail client the authentication credentials will be rejected and the spamming will be temporarily stopped.

In newer versions of MDaemon, we’ve added Account Hijack Detection, which will automatically disable an account if it sends a specified number of outbound messages via an authenticated session in a given period of time. We recommend enabling this feature. In MDaemon, it’s located under Security | Security Settings | Screening | Hijack Detection.

Account Hijack Detection
Account Hijack Detection

The next step is to look at the Received headers. Find the one where the message was received by your server. Here is an example of what this header would look like:

Received from computer1 (computer1@example.com (192.198.1.121) by example.com (MDaemon PRO v17) with ESMTP id md50000000001.msg for <UserWhoWasSpammed@example.com >, Fri, 13 Sep 2016 21:00:00 -0800

Find the connecting IP (192.198.1.121) in the above example. This is the machine that is sending out spam. Locate that machine to deal directly with the spambot on that machine.

If the message wasn’t authenticated or wasn’t sent from your local network, locate the Message-ID header and copy that value.

Message-ID: <123.xyx.someone@example.net>

Then open the MDaemon SMTP-IN log that covers the time when that message was received by MDaemon (based on the timestamp in the received header) and search for that Message-ID in the log (in the 250 response line when the message is accepted):

Thu 2016-09-12 20:00:00: –> 250 Ok, message saved <Message-ID: <123.xyx.someone@example.net>>

Look at the rest of transaction and see why the message was accepted/not rejected – spam score, DNSBLs, etc.

Also, if your external domain is listed in the Trusted Hosts list (Security | Security Settings | Trusted Hosts), try removing it from this list.

Check back often for more tips & tricks!

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New Feature: Email Health Check for Optimal Security Settings

Our latest version of MDaemon, MDaemon 17, comes packed with lots of new features for administrators and end users, including new password security, support for Let’sEncrypt, DropBox integration, message scheduling, and much more. Today, I’d like to demonstrate MDaemon’s new Health Check utility. With this handy new tool, administrators no longer have to go through each feature to verify that it’s configured for optimal security. This new tool will analyze all security-related settings, display each setting’s current value, its recommended value, and where that feature is located in the MDaemon interface. This tool offers administrators the flexibility to change all settings to their recommended value at the same time, or to select and change individual settings. In this tutorial video, I demonstrate how to use the new Health Check utility.

Need additional help? More guidance on the MDaemon Health Check utility can be found in this knowledge base article.

If you haven’t yet upgraded to MDaemon 17, check out the release notes and our previous blog post to see what you’re missing!

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Get Aggressive at Fighting Spam by Re-training the Bayesian Learning Process in MDaemon

Fight spam with Bayesian Learning in MDaemon

In certain situations, it may be necessary to retrain your Bayesian Learning database. This can be necessary when spam messages are inadvertently placed in the Bayes non-spam folder, or when non-spam messages are placed in the Bayes spam folder.

To reset your Bayesian Learning and start training it again from scratch, you can perform the following steps:

1. Stop the MDaemon service.
2. Verify that the MDaemon executables (MDaemon.exe, CFEngine.exe, MDSpamD.exe, WorldClient.exe) have all exited memory using Windows task manager.
3. Rename the folder “/MDaemon/SpamAssassin/Bayes/” to”/MDaemon/SpamAssassin/Bayes.old/”
4. Re-launch MDaemon.
5. Go to Security | Spam Filter | Bayesian Classification, then click on the Learn button.

At this point, MDaemon recognizes that the Bayes folder isn’t there when the learn process is triggered, so it builds a new Bayes folder.

You will then need to feed Bayesian learning at least 200 spam and 200 non-spam messages (although the more the better) to start the Bayesian learning process again. Here is a knowledge base article on training the Bayesian learning process in MDaemon.

The Bayesian learning engine won’t process new messages until the administrator has taught it 200 spam and 200 non-spam messages. So even if an administrator were to manually press the Learn button OR have MDaemon learn automatically at midnight, the Bayesian engine  wouldn’t apply itself to new messages even though the new folder is created.

Once MDaemon recognizes that Bayesian learning has learned more than 200 spam and 200 non-spam messages, it will start applying what it has learned to new messages.

You can run a script to determine how many messages the Bayesian filter has learned from. This will come in handy for administrators who need to know how many more messages to feed the Bayesian filter. This process is explained in this knowledge base article.

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Beware of New Amazon.com Phishing Scam

Scam AlertThe holidays are upon us, and with all of the giving and sharing come scams aimed at exploiting human nature and stealing our personal information, such as names, addresses and credit card numbers. This year, the scammers are at it again, with a phishing scam designed to look like an email from Amazon.com claiming that there is a problem processing your order. The scam asks you to click on a link to verify your personal information. A good example of this scam email is described on the AARP blog.

As a reminder, here are a few tips to avoid falling victim to phishing scams.

  • Never click on unfamiliar or suspicious links. If a link claims to refer to a familiar website, then manually enter the web address in the address bar.
  • Hover your mouse over images & links to review the URL they refer to.
  • Beware of “Unsubscribe” links in phishing emails. When clicked, these links can let the spammer know that your address is valid, which often leads to more spam.
  • Never reply to spam or unsolicited messages.

For more tips on how to avoid these & other scams, click here to review our post on protecting your email privacy, and stay safe this holiday season!

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