4.5.1 MetaDefender Email Security release

Release Date: November 19, 2018

MetaDefender Email Security 4.5.1 is a maintenance release focused on stability improvements

MetaDefender Email Security did not add the 'Received' header for emails

When MetaDefender Email Security received emails to be processed, the delivery did not include the necessary 'Received' header

Improved TCP read functionality in processor communication to prevent random read failures

TCP read functionality was improved to decrease read timeout problems between internal processes

Inbound SMTP port is now monitored

Added a monitoring mechanism which regularly checks the inbound SMTP port and restarts the service if it seems to be down