> > There is one mailchimp user (an org sending mail news by leveraging
only one???? ;) > mailchimp services), whose mails are flagged by our mail gateway servers > (postfix with amavis and spamassassin) with "FORGED_GMAIL_RCVD". > > I am trying to understand what is wrong with these mails and they > trigger the "FORGED_GMAIL_RCVD" rule. I didn't write these rules, but my guess would be because the Host network is mailchimp, and the email address is @gmail.com ? > How should these (and possibly other ones too) rules be treated in > production systems to avoid banning legitimate mailing list mails? > It is very difficult to separate 'legitimate' email from spam, especially at mailchimp. I have decided to just block ranges that are emitting spam/newsletters that people did not sign up for. If legitimate email is blocked, though luck for the sender. Should they have chosen a more professional (not free) service.
