Michael Peddemors via mailop skrev den 2023-12-18 22:45:
Strange rewriting mechanism, but this kind of volume should be restricted from the o365 side, no? What about the usage of non-existant FQDN name in the MAIL FROM?
what mta ? what port is used ?i use postfix with postscreen on port 25, in port 465, 587 is dnsbl from spamrats, before sasl auth
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