On Sat, Nov 06, 2021 at 07:00:12PM -0400, post...@ptld.com wrote: > > My expectation is that dovecot is not involved in this issue, but I'm > > not sure, so I mention anyway that that I have set > > > > virtual_transport = dovecot > > > Dovecot has the same setting: recipient_delimiter = + > In the logs, is the mail being rejected by postfix or by dovecot > after postfix tries to deliver?
I'm not 100% sure: I suspect dovecot because the error occurs talking on the pipe to dovecot. postfix/smtpd[3889975]: connect from mail-pg1-f171.google.com[209.85.215.171] postfix/smtpd[3889975]: Trusted TLS connection established from mail-pg1-f171.google.com[209.85.215.171]: TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256 postfix/smtpd[3889975]: A0BCEA0FEB: client=mail-pg1-f171.google.com[209.85.215.171] postfix/cleanup[3889978]: A0BCEA0FEB: message-id=<CA+_EX49q_CXxH=ySLOPb92_0hOBfZczEsqr6wg0a4eJzaJ=v...@mail.gmail.com> opendkim[1558227]: A0BCEA0FEB: mail-pg1-f171.google.com [209.85.215.171] not internal opendkim[1558227]: A0BCEA0FEB: not authenticated opendkim[1558227]: A0BCEA0FEB: DKIM verification successful opendkim[1558227]: A0BCEA0FEB: s=20210112 d=example-com.20210112.gappssmtp.com a=rsa-sha256 SSL postfix/qmgr[3695772]: A0BCEA0FEB: from=<j...@example.com>, size=3753, nrcpt=1 (queue active) postfix/pipe[3889979]: A0BCEA0FEB: to=<jeff...@p27.eu>, relay=dovecot, delay=0.2, delays=0.18/0.01/0/0.02, dsn=5.1.1, status=bounced (user unknown) postfix/cleanup[3889978]: CE95FABEF3: message-id=<20211107202739.ce95fab...@nantes-m1.p27.eu> postfix/qmgr[3695772]: CE95FABEF3: from=<>, size=5839, nrcpt=1 (queue active) postfix/bounce[3889981]: A0BCEA0FEB: sender non-delivery notification: CE95FABEF3 postfix/qmgr[3695772]: A0BCEA0FEB: removed postfix/smtpd[3889975]: disconnect from mail-pg1-f171.google.com[209.85.215.171] ehlo=2 starttls=1 mail=1 rcpt=1 bdat=1 quit=1 commands=7 postfix/smtp[3889983]: CE95FABEF3: to=<j...@example.com>, relay=aspmx.l.google.com[64.233.165.26]:25, delay=1.2, delays=0/0.02/0.25/0.9, dsn=2.0.0, status=sent (250 2.0.0 OK 1636316860 bn9si33625175ljb.258 - gsmtp) postfix/qmgr[3695772]: CE95FABEF3: removed The key line there seems to be this: to=<jeff...@p27.eu>, relay=dovecot, delay=0.2, delays=0.18/0.01/0/0.02, dsn=5.1.1, status=bounced (user unknown) There is, indeed, a line in /etc/dovecot/conf.d/15-lda: recipient_delimiter = + which I just uncommented. But after bouncing dovecat (and postfix, for good measure), the log says about the seame thing as before.