Fourhundred Thecat: > Hello, > > I have strict helo checks: > > smtpd_helo_required = yes > smtpd_helo_restrictions = reject_non_fqdn_helo_hostname, > reject_invalid_helo_hostname, > reject_unknown_helo_hostname
Anecdotal: I used to have these exact settings but removed ‘reject_unknown_helo_hostname’ about a year ago, after I encountered a legitimate sender that had not bothered to set up DNS properly. Other than that your settings work perfectly for me.
