On 2025-09-17 at 08:26:29 UTC-0400 (Wed, 17 Sep 2025 14:26:29 +0200)
Arrigo Triulzi via mailop <[email protected]>
is rumored to have said:

Yes, what I wanted to do is create a dedicated SpamAssassin rule which changes these values for a block of IPs but I can’t seem to figure it out.

The best place to get help with SpamAssassin is the SpamAssassin Users' Mailing list. see https://cwiki.apache.org/confluence/display/SPAMASSASSIN/MailingLists for how to subscribe.

The most important first step of protecting a particular network range from SpamAssassin is to set the internal_networks and trusted_networks parameters correctly. Those are both critical to get SA to select specific Received headers for filtering.

However, there's a strong possibility in the case of MS365 that you need to be more targeted than a particular IP range.


--
 Bill Cole
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(AKA @[email protected] and many *@billmail.scconsult.com addresses)
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