Thomas Quinot: > * Wietse Venema, 2020-05-08 : > > > > As far as I can tell, support for issuer and subject CN lookup > > > was removed on 20200316. Is my understanding correct that support > > > > As far as I know it was never implemented. > > Sorry, I probably misunderstood the code while reading it. > For the record, the change I was referring to is the following: > > 20200316 > > Removed the issuer_cn and subject_cn matches from > check_ccert_access. Files: smtpd/smtpd_check.c, > proto/postconf.proto.
It was implemented in and removed from the unstable Postfix release. If you want to avoid incompatible changes, use a stable Postfix release instead. Wietse