Watchguard blocking attachments of only one user (Urgent)
Dear Team.
We are using Watchgurad Firebox M200 with Total Security Suite.
we facing very critical problem, our one user is not receiving any attachment from specific domain showing text file only in that written: (other all are receiving same attachments)
The WatchGuard Firebox that protects your network has detected a message that may not be safe.
Cause : The file type may not be safe.
Content type : application/ms-tnef
File name : winmail.dat
Status : File Name violation
Action : The Firebox deleted winmail.dat.
Your network administrator can not restore this attachment.
Please help
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Root cause is that the sender is sending email in Rich Test format to this user!
https://www.slipstick.com/problems/outlook-is-sending-winmail-dat-attachments/
Why do email attachments sent through the SMTP-proxy appear as Winmail.dat attachments?
http://watchguardsupport.force.com/publicKB?type=KBArticle&SFDCID=kA2A00000000FnKKAU&lang=en_US