Mail appeared to be SPAM or forged

[kilburn]

First of all, this is simply policyd-weight doing its job, so it will not be fixed because it is not a bug.

Anyway, I do not understand what is your specific issue. Are *your users* reciving these messages, or people who sends mails to them?

In the former case, the problem is that they are not authenticating against the server (they haven't checked the "this server requires authentication" in their mail clients).

In the later case, the problem is that the sender's ISP is badly configured. At this point you have three options: (1) Notify the user's ISP about their misconfiguration, and wait for them to solve it; (2) Disable policyd-weight completely by removing the corresponding "check_policy_service" line from /etc/postfix/main.cf (there are two policy_services, one is postgrey and the other policyd-weight); or (3) Add a sender_dependent whitelist and list the badly configured ISPs there.