v5.2.4 Released

email spam filter server



  • Added monitor for zombie Mailborder tasks stuck in the running mode. Tasks older than 1 hour in the run mode will automatically be aborted to avoid task blocking.
  • Added a new command for the CLI. The mb-gdu command is a command line file browser than will show the size of directories and files. Useful if you have a server running low on disk space. The tool is from the open source dundee/gdu project.
  • Added display name phishing detection. This is where an attacker sets the display name to include an email address that does not match the actual sender email address. For example: "Bob Jones <bo*@co*****.com>" as the display name but the actual sender address is something like ha****@gm***.com. This does not impact bounce addresses or Reply-To address. This check assigns a spam score of 30 when the condition is found. The score and checking can be changed. See /etc/mailborder/engine.cf for more details.
  • Corrected a condition where ClamAV could report the wrong virus signature version if more than one virus update file is present.
  • Updated MaxMind country database for IP addresses.
  • Updated SourceGuardian loaders to the latest version.
  • Added license expiration notification email to the Mailborder maintenance function.
  • Updated MySQL server parameters for new Mailborder installations freeing up some memory for other applications.
  • Corrected a bug in the Portal User notification for Quarantined emails. This only impacted new Portal Users and only for 24 hours.


How to Upgrade

Run the following commands as the root user:

apt-get update
apt-get dist-upgrade


OS Upgrade Support

We offer support for OS upgrades. If you have an annual support contract, this support is included without charge. If you do not have a support contract, we will perform a scheduled upgrade for you remotely for a discounted rate of $159. This service is highly recommended even if you are adept with Linux. If you contact us with a failed upgrade and your hair on fire, the support fee is the normal rate of $299.

Contact: https://www.mailborder.com/contact

Ubuntu 22.04 LTS

The end of (free) support for Ubuntu 22.04 is in April 2027.

Ubuntu 20.04 LTS

The end of (free) support for Ubuntu 20.04 is in April 2025.

Ubuntu 18.04 LTS

Support for Ubuntu 18.04 ended in April 2023. If you have not upgraded to Ubuntu 20.04, we suggest that you do so. However, we do recommend that you contact Mailborder support prior to doing the upgrade. It is not straight forward and requires manually correcting several modules. We highly recommend the support option for upgrades.

The OS upgrade KB is here: https://mailborder.zendesk.com/hc/en-us/articles/14698885841559


20 June 2023