Whitelisting mail servers

[Benny Pedersen]

Nikolaos Milas skrev den 2022-11-23 14:09:

> Is there a way to whitelist a mail server so that all mail sent to us
> by that server is accepted, bypassing all other checks, especially
> Bayes filtering?

spamassassin use default dnswl.org

> The problem is with Banks; we are receiving huge amounts of phishing
> mail, so trained Bayes filters tend to become over-reactive, sometimes
> discarding even real mail.

why would you help phishers ?

> My idea was to whitelist the mail servers of the Banks (if I find out
> how) to ensure that their mail reach us, but if you suggest other ways
> to achieve the desired result, I would appreciate your advice.

dmarc + fully aligned envelope sender and dkim, all in case banks should 
not be forwarded by sendgrid or other stupid forwarders