exchange intelligent message filter blocking legit emails

[marysmith]

our imf is going crazy and flagging client emails as spam. how do i tweak the threshold without breaking everything?

 

[Rapunzel]

If Exchange Intelligent Message Filter is blocking legit emails:

• Lower SCL threshold (spam sensitivity)
• Add senders to Safe Senders/Allow list
• Adjust spam filter policies in Exchange Admin Center
• Check quarantine and release emails

reduce filter strictness and whitelist trusted senders.

 

[robin]

The Intelligent Message Filter(IMF) of Microsoft Exchange Server could end up blocking emails that should have not been blocked based on content, reputation of the sender, or filtering criteria set. In order to avoid this problem, one can tweak spam filter settings, put certain email addresses or domains in the white list, and conduct regular reviews of quarantine emails.

 

[Colter]

Intelligent message filtering is an email system that blocks spam or suspicious emails using AI rules and patterns. Sometimes it wrongly flags legitimate emails as spam, preventing users from receiving important messages, which requires manual review or whitelist adjustments to fix.

 

[Bryleeeaton]

In order to prevent Exchange filtering out legitimate messages, add senders to the Tenant Allow/BlockList via the Microsoft Defender portal. Alternatively, add a Mail Flow Rule with SCL of -1 to trusted domains. The thing is always to ensure that senders have authentic SPF, DKIM and DMARC records to avoid the generation of spoofing.

 

[Tyler]

In order to prevent Exchange filtering out legitimate messages, add senders to the Tenant Allow/BlockList via the Microsoft Defender portal. Alternatively, add a Mail Flow Rule with SCL of -1 to trusted domains. The thing is always to ensure that senders have authentic SPF, DKIM and DMARC records to avoid the generation of spoofing.

thanks for these suggestions they are really helpful

 

[alexander78]

In order to prevent Exchange filtering out legitimate messages, add senders to the Tenant Allow/BlockList via the Microsoft Defender portal. Alternatively, add a Mail Flow Rule with SCL of -1 to trusted domains. The thing is always to ensure that senders have authentic SPF, DKIM and DMARC records to avoid the generation of spoofing.

yeah the allow/block list is def solid for specific senders. but for getting the general threshold right without messing things up, the SCL tweak Rapunzel mentioned seems like the direct way. just gotta be really slow and careful with that, i've seen it make a bigger mess fast lol.