Quick note: A single SMTP recipient "postmaster@…" is now whitelisted by default.
Previously we included a settings map template to manually enable this behavior. This template is now dropped. It does not hurt to keep the old settings map, it will just never be applied.
Same for outbound: No matter the authentication, a SMTP FROM postmaster@… will be score -2500.00. No prefilter is applied to keep signatures.
-2500.0 will also skip ClamAV-positives, please keep that in mind, do not forward viruses.