A definition in the engine is corrupt and is not allowing the Auto updates to complete successfully
Items will arrive in the Failed Mails folder when the Engine will fail to Initialize
All supported environments
Obtain the credentials from the support representative and log into the Update.gfi.com site
Once logged in, navigate to the following directory "incav2>avira>C1" folder and click the "avira_current_version.c1.zip" link to download the latest Avira definitions.
After the download has completed you will need to navigate to services.msc and stop the SMTP or Microsoft Exchange Transport service (note this will stop mail flow and queue the messages in Microsoft Exchange until restarted)
In services.msc console locate and stop all GFI services related to GFI MailEssentials
Extract the downloaded zip from step 2 to the following location "...\GFI\MailEssentials\Updater\avira" and overwrite when prompted by Microsoft Windows
Navigate to the directory where you just extracted the files from the previous step "...\GFI\MailEssentials\Updater\avira" and locate the file "avira.zip"
Extract the avira.zip twice to the following locations "...\GFI\MailEssentials\AntiVirus\avira" and "...\GFI\MailEssentials\AntiVirus\backup\avira" and overwrite when prompted
Restart all services stopped in step 3 and 4.
Open GFI MailEssentials configuration and verify that the Avira engine has been updated successfully to the latest version
Any kind of corruption of the definitions can cause updates to not download properly.
Improper exclusions for file based back ups and 3rd party anti-virus scanners can corrupt definitions
Content filter type hardware firewalls can corrupt the MD5 checksum during the update process please verify the proper exclusions are in your hardware firewall for successful updates.
Please see the following article for the current update sites needed to be excluded in your firewall: http://www.gfi.com/support/products/gfi-mailessentials/What-sites-are-used-for-GFI-Product-Updates