Hmm, actually it is set - root@ns:/usr/local/etc/dovecot # dovecot -a | grep auth_username_format auth_username_format = %Ln
Oddly, it now seems to work once I made this change - root@ns:/usr/local/etc/dovecot # dovecot -a | grep -A5 "protocol lmtp" protocol lmtp { # Added explicit hostname hostname = ns.mahan.org mail_fsync = optimized mail_plugins = " sieve" } I now see - root@ns:/usr/local/etc/dovecot # tail -f /var/log/maillog | grep " ma...@mahan.org" Mar 31 08:54:47 ns postfix/lmtp[74403]: 7871EA2DFB5: to=<ma...@mahan.org>, relay=ns.mahan.org[private/dovecot-lmtp], delay=1.9, delays=1.8/0.01/0.01/0.01, dsn=2.0.0, status=sent (250 2.0.0 < ma...@mahan.org> t1FFEMfioFykIgEAYVf4yg Saved) So I guess it is working? :-) Thanks, Patrick On Sun, Mar 31, 2019 at 7:56 AM Aki Tuomi via dovecot <dovecot@dovecot.org> wrote: > > On 31 March 2019 17:41 Jerry via dovecot < dovecot@dovecot.org> wrote: > > > On Thu, 28 Mar 2019 05:22:37 -0700, Patrick Mahan via dovecot stated: > > >FreeBSD 11.2 > >Postfix 3.3.2 > >Dovecot 2.3.4 > > > >I am trying to use dovecot lmtp with postfix to verify authentication > >of incoming email and to avoid being a spam relay (an issue I was > >having using sendmail as my MTA). > > > >I am getting the following log message in /var/log/maillog: > > > >Mar 30 20:31:38 ns postfix/smtpd[40373]: NOQUEUE: reject: RCPT from > >mail-eopbgr750091.outbound.protection.outlook.com[40.107.75.91]: 450 > >4.1.1 < ma...@mahan.org>: Recipient address rejected: unverified > >address: host ns.mahan.org[private/dovecot-lmtp] said: 550 5.1.1 > >< ma...@mahan.org> User doesn't exist: ma...@mahan.org (in reply to > >RCPT TO command); from=< pma...@silver-peak.com> to=< ma...@mahan.org> > >proto=ESMTP helo=< NAM02-BL2-obe.outbound.protection.outlook.com> > > > >'mahan' does exist on ns.mahan.org. So I am confused to why lmtp is > >failing to find this username. > > > >Thanks, > > > >Patrick > > > > You probably shuld be asking this on the Postfix forum. Have you read > < ">http://www.postfix.org/ADDRESS_VERIFICATION_README.html> > <http://www.postfix.org/ADDRESS_VERIFICATION_README.html%3E>? You also > have "smtpd_reject_unlisted_recipient" options. You really need to post > the output of "postconf -nf" and perhaps "postconf -Mf". > > -- > Jerry > > > I would try setting > > auth_username_format=%Ln > > as otherwise domain part is included in username lookup... > > --- > Aki Tuomi > >