Reindl Harald: > How can this happen? > > The address "mailer-dae...@plancompany.at" does not exist > but if checked from barracuda SPF postfix answers with valid?
Postfix SENDS mail from mailer-daemon, therefore Postfix ACCEPTS
mail to mailer-daemon.
When the mailer-daemon alias does not exist (it should resolve to
"postmaster"), the local delivery agent logs a warning and discards
the recipient.
Wietse
