I've been out of the mailserver side of things for eight or ten years now, and got drafted to help a friend replace a SUSE based server that is pretty hacked over with a new one.
The current problem I'm having is that despite having: myorigin = /etc/mailname mydomain = rcousins.com myhostname = rcousins.com all set in main.cfg mail is *still* appearing as from " mail1.home.rcousins.com" I can't find "mail1.home" anywhere in the configuration file *or* the postconf output: root@mail1:~# postconf | grep rcousins.com mydestination = localdomain, localhost, localhost.localdomain, albertosevilla.com, ponderosa1969.com, bccsecurity.com, wickedcoolvideo.com, bunnycousins.com, danacummin.com, hewittfarm.com, wychwoodfarms.com, rcousins.com, primosresearch.com, smithie.com, mail.rcousins.com, abelhome.net mydomain = rcousins.com myhostname = rcousins.com smtp_tls_cert_file = /etc/letsencrypt/live/lab2.rcousins.com/fullchain.pem smtp_tls_key_file = /etc/letsencrypt/live/lab2.rcousins.com/privkey.pem smtpd_tls_cert_file = /etc/letsencrypt/live/lab2.rcousins.com/fullchain.pem smtpd_tls_key_file = /etc/letsencrypt/live/lab2.rcousins.com/privkey.pem (these keys will be replaced by the proper FQDN when it's flipped into production) root@mail1:~# postconf | grep hostname invalid_hostname_reject_code = 501 lmtp_lhlo_name = $myhostname lmtp_tls_verify_cert_match = hostname local_transport = local:$myhostname milter_macro_daemon_name = $myhostname myhostname = rcousins.com smtp_helo_name = $myhostname smtp_tls_verify_cert_match = hostname smtpd_banner = $myhostname ESMTP $mail_name smtpd_proxy_ehlo = $myhostname unknown_helo_hostname_tempfail_action = $reject_tempfail_action unknown_hostname_reject_code = 450 root@mail1:~# grep mail1 /etc/postfix/main.cf root@mail1:~# grep hostname /etc/postfix/main.cf myhostname = rcousins.com #smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu) smtpd_banner = $myhostname ESMTP $mail_name What am I missing?
