So far I lived under impression that smtpd service does some basic sanitation, de-pipelining etc to a SMTP session, before passing data to a smtpd_proxy_filter content filter.
Apparently dot-stuffing sanitation is not performed, as (invalid) lines with a single leading dot can still reach a proxy content filter (which yields a warning in the log in case of amavisd). Is this expected behaviour and I should turn off the warnings? Mark
