i setup email with my isp smtp as relay server.
when tested with few test email, everything worked fine.
now testing few more users with real email conversations, the isp smtp now rejecting all my email as spam with error:
host xxxx said: 554 5.7.1 Message refused by Heuristic check. This email has been rejected. The email message was detected as spam. (in reply to end of DATA command)
is there anything in data command that can trigger spam detection?
anyway to avoid this?
NethServer Version: 7rc3