If the relayhost is empty in the file sender_dependent_relayhost_maps=/etc/postfix/relayhost_maps; the email sent from seiad...@osu.edu will be relayed by relay host in the file /etc/postfix/main.cf.
Thanks for help from David and Wietse!!! Carl -----Original Message----- From: owner-postfix-us...@postfix.org [mailto:owner-postfix-us...@postfix.org] On Behalf Of Wietse Venema Sent: Tuesday, April 22, 2014 3:11 PM To: Postfix users Subject: Re: How to configure to let one specific sender to bypass the relay host in /etc/postfix/main.cf? Erwan David: > >>> You might want to use sender_dependent_relayhost_maps, to set an > >>> empty relayhost for this sender My >>doc says it appeared in 2.3, > >>> so it should be Ok in 2.6.6 > > The warning is returned when I run the following command: > > > > # postmap /etc/postfix/relayhost_maps > > postmap: warning: /etc/postfix/relayhost_maps, line 1: expected > > format: key whitespace value > > I never used the feature so never had to define an empty relayhost > this way... His problem is with the relayhost_maps file, he needs to specify a lookup key (sender address) and result value (relay host). Wietse