PROBLEMLarge emails sent on a Microsoft Exchange server are not delivered to the user inbound. These emails land up into the EmailSecurity or in the AntiSpam FailedMails folder.
In the TNEF2MIME.gfi_log.txt you would find the following "103" error:
2013-07-05,10:48:23,083,1,"#00001660","#00002fa8","error ","TNEF2MIME","Error 103 - aborting"
2013-07-05,10:48:23,083,1,"#00001660","#00002fa8","error ","TNEF2MIME","Exiting CTnef2MimeImpl::tnef2pfi (103) [0x80004005]"
2013-07-05,10:48:23,083,1,"#00001660","#00002fa8","error ","TNEF2MIME","Converting from TNEF to PFI...FAILED (103) [0x80004005]"
- GFI MailEssentials
- Microsoft Exchange server
- all supported environments
- Go to Start > Run type regedit and press Enter
- Navigate to: HKLM\SOFTWARE\Wow6432Node\GFI\MailEssentials\EmailSecurity\Config and HKLM\SOFTWARE\Wow6432Node\GFI\MailEssentials\AntiSpam\Config
- Create a new DWORD named T2Mmaxmsgsize
- Right-click the new value and select Modify
- Enter the maximum size in bytes (decimal). The maximum value supported is 209715200
- Go to Start > Run, and type Services.msc
- Restart the GFI MailEssentails services
Emails which are sent on Microsoft Exchange servers are formatted in TNEF. In order for GFI MailEssentials to process such messages, they need to be converted into the MIME email format first. The conversion requires the TNEF message size to be loaded into the memory. To protect the system from a memory overrun, the default maximum size of TNEF emails is set to 50 MB. If the email is larger, it will be stored into the EmailSecurity Failedmails folder. The registry key supports message sizes up to 200 MB.