What file type violated the transport rule in Exchange? #M365AMA
In this episode, the #M365AMA panel discusses the following community question:
“I know that an email violated a transport rule for bad attachments, but I cannot determine what file type actually violated the rule. Extended Report offers no insight, and message headers do not include this information. Without a Defender license, how can I gain further insight into what was the violating file type?”
Check out the discussion here:
Participating in this discussion were:
- Christian Buckley, RD+MVP @buckleyplanet
- Heather Severino, MVP+MCT @HeatherSeverino
- Hal Hostetler, MVP @TVWizard
- Kirsty McGrath, MVP @KirstyMcGrath13
- Mike Nelson, MVP @mikenelsonIO
Some relevant notes/links shared by the team:
- How to Tell Which Transport Rule Was Applied to an Email Message, via Paul Cunningham at Practical 365 [https://practical365.com/tell-transport-rule-applied-email-message/]
- Mail flow rules (transport rules) in Exchange Online, via Microsoft Learn [https://learn.microsoft.com/en-us/exchange/security-and-compliance/mail-flow-rules/mail-flow-rules]
