I have been trying to figure out how to get Postfix to not append "localhost" in to the From: field. I am sending email mostly between two local users, using RHEL5/Squirrelmail/Postfix/Dovecot.
When I send an email from user_...@schoolretail.local to user_...@schoolretail.local it arrives from user_...@localhost.schoolretail.local I am also relaying mail to another box that expects the mail to not have "localhost" appended to the domain name. Users of the other (Windows) box need to see the address without "localhost" prepended. I had a very similar system working with Ubuntu, and I solved this problem by setting myorigin to a file that contained my domain name (schoolretail.local), but that doesn't seem to work on the RHEL5 system. Sorry if this is not a Postfix question! I just thought "myorigin" should set the From address. I must be missing something! [r...@schoolmail ~]# postconf -n alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases command_directory = /usr/sbin config_directory = /etc/postfix daemon_directory = /usr/libexec/postfix debug_peer_level = 2 home_mailbox = Maildir/ html_directory = no inet_interfaces = all mail_owner = postfix mailq_path = /usr/bin/mailq.postfix manpage_directory = /usr/share/man mydestination = $mydomain, $myhostname, localhost.$mydomain mydomain = schoolretail.local myhostname = schoolmail.schoolretail.local mynetworks = 127.0.0.0/8 myorigin = schoolretail.local newaliases_path = /usr/bin/newaliases.postfix queue_directory = /var/spool/postfix readme_directory = /usr/share/doc/postfix-2.3.3/README_FILES relayhost = 192.168.1.16 sample_directory = /usr/share/doc/postfix-2.3.3/samples sendmail_path = /usr/sbin/sendmail.postfix setgid_group = postdrop unknown_local_recipient_reject_code = 550
