On Sun, Nov 30, 2014 at 9:00 PM, Wietse Venema <wie...@porcupine.org> wrote: > I have added this text at the end of "Non-SMTPD Milter applications": > > Wietse > > Signing internally-generated bounce messages > > Postfix normally does not apply content filters to mail that is forwarded or > aliased internally, or to mail that is generated internally such as bounces or > Postmaster notifications. Filtering internally-generated bounces could result > in loss of mail when a filter rejects or defers a message (the resulting > double-bounce message would almost certainly also be blocked). > > To sign Postfix's own bounce messages, enable filtering of > internally-generated > bounces (line 2 below), and don't block any mail with non_smtpd_milters, > header_checks or body_checks (lines 3-5 below). > > 1 /etc/postfix/main.cf: > 2 internal_mail_filter_classes = bounce > 3 non_smtpd_milters = nothing that can block mail > 4 header_checks = nothing that can block mail > 5 body_checks = nothing that can block mail
That's great, thanks. José Borges Ferreira
