New How-to Guide: Email Server Settings Best Practices

We’ve added a new how-to / quick-start guide to our Literature page. This guide explains the recommended settings for protecting your mail server from sending outbound spam, and includes tips on how to avoid ending up on a blacklist, how to require SMTP authentication, bandwidth management, prevention of spoofing and abuse, and more. You can find this guide under the How-to Quick-Start Guides section of our Literature page. Click on Email Server Settings: Best Practice How-to Guide.

If you have not yet installed MDaemon, then these documents will help guide you in the deployment process:

 

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New SecurityGateway How-to Guide – Settings to Protect your Mail Server

SecurityGateway protects your mail server and end users from email-borne threats such as spam, viruses, malware, phishing attempts, and much more. For best results, SecurityGateway can  be configured to perform the following tasks:

  • Prevent spammers from guessing passwords
  • Verify that a user is valid before creating an account
  • Prevent unauthorized account access
  • Prevent unauthorized mail relaying
  • Protect your domain with IP Shielding
  • Encrypt communications with SSL
  • Prevent backscatter (out-of-office and non-delivery replies (NDRs) sent in response to messages that your users never sent)
  • ….and much more.

Click here to view the new SecurityGateway how-to guide.

Scroll down to the SecurityGateway section & click on “Settings to Protect Your Mail Server: How-to Best Practice Guide.”

If you don’t yet have SecurityGateway & would like to try it out, then visit the Downloads page & download your free trial. Let us know if you have questions!

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New How-to / Best Practices Guide – Deploying a Mail System

If you’re considering setting up an email server for your business, you’ll need to consider the following factors:

  • Domain registration
  • How to tell other mail servers where to send email addressed to your domain (DNS)
  • Encryption requirements (SSL)
  • How to protect your domain from abuse by creating PTR, SPF, DKIM and DMARC records
  • How email addressed to your domain will be received by the mail server (via direct delivery, or by downloading mail from an ISP or other host via DomainPOP, MultiPOP, ETRN or ATRN)
  • Outbound mail delivery considerations, such as whether to send outbound messages directly to the receiving mail server, or through a smart host or ISP
  • ISP restrictions (some ISPs block port 25)
  • Hardware considerations
  • Internet connection
  • Protection from spam & viruses

Settings may vary depending on your specific needs and business environment. Our new How-to/Best Practices guide: Deploying a Mail System, will help you get started with your new mail server. You can find this and other how-to guides on our Literature page.

If you have questions or comments, or would like to recommend other blog topics, please use the Comments section below & let us know!

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Are you Running Out of Disk Space?

Are you receiving the following message from MDaemon?

“The disk space on the drive(s) used by your MDaemon mail server has dropped below a preset threshold. SMTP, DomainPOP, and MultiPOP functions have been disabled. You must manually restart them once some space has been freed up.”

The hard drive which mdaemon.exe is located on is running out of space. Your MDaemon is configured to monitor the hard drive space and if you drop below a certain threshold, it sends an e-mail to your postmater account and disables TCP/IP services. The reason for this is to prevent running completely out of disk space.

The settings for this feature can be reached by clicking on Setup > Preferences > then clicking on Disk.

You may want to use a disk space utility such as i.Disk or WinDirStat to see what folders are consuming your disk space. These are the MDaemon folders most likely to be using all your disk space:

MDaemon/Users/ – This is where all of your users’ e-mail is stored. If this folder seems to be consuming a large amount of disk space, drill down two levels to where your individual user folders are and check to see if any of them are consuming a large amount of space.

MDaemon/Backup/ – MDaemon is configured to perform nightly backups of your configuration files and locates these here. Also, whenever you perform an upgrade of MDaemon a copy of your entire App folder along with your SpamAssassin folder is placed in a subfolder of this folder. MDaemon does not ever delete any of your backups so if not deleted by you they will keep accumulating.

MDaemon/Logs/ – MDaemon stores all of your log files in this folder. Depending on your MDaemon settings, it may compress your older logs into a .ZIP file and place that .ZIP file in the OldLogs subfolder of this folder. Again, MDaemon does not delete any of your old logs, so if not deleted by you they will keep accumulating.

MDaemon/Public Folders/ – This is where all of the data from your MDaemon public folders (contacts, calendars, tasks, mail, documents) is stored.

The above folders are the most likely culprits for the space being consumed, but if disk spaced is taken up in other directories, then I recommend using Windows Explorer or one of the previously mentioned utilities to identify the cause of the used disk space.

If it is old log files or old zipped backup files which are consuming your disk space, you can delete them or move them to a different drive or medium. If it is mail or information in the Users folder or Public Folders folder, you will need to find out what users are taking up the space and ask them to remove the mail.

You can move your MDaemon mailboxes to a different drive by following this knowledge base article.

You can move your MDaemon logs to a different drive by following this knowledge base article.

You can turn on old mail pruning (Setup > Domain Manager > Options > Account & Mail Pruning and Setup > Server Settings > Pruning) to have MDaemon remove mail that is older than a certain number of days.

To prevent users from accumulating too much e-mail in their mailboxes, you can activate usage quotas on a per-user basis. When editing a user account, click on Quotas in the left-hand navigation menu. You can set a  maximum number of messages stored at once and/or a maximum amount of disk space each user is allowed to use.

Comments or questions? Share them with us in the Comments section below.

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