Hi, I suspect this is wrong relayhost = [smtp.gmail.com]:587
that looks like typical setup for an email client using IMAP and that is the config for sending email. It would require a username and password. https://support.google.com/mail/answer/7126229?visit_id=636830764979015900-598820322&hl=en&rd=1 -ANGELO FAZZINA ITS Service Manager: Spam and Virus Prevention Mass Mailing G Suite/Gmail ang...@uconn.edu University of Connecticut, ITS, SSG, Server Systems 860-486-9075 -----Original Message----- From: owner-postfix-us...@postfix.org <owner-postfix-us...@postfix.org> On Behalf Of Michael Sent: Monday, January 14, 2019 10:23 AM To: postfix-us...@cloud9.net Subject: New SASL error when relaying through gmail Hello, I have been using postfix on a local machine for a few years to act as a relay for my domain to send email out through gmail. This has worked well enough, but I noticed recently that I had some email queued up and was not getting emails out any longer. In my mailog, I am seeing these errors: Jan 14 08:16:18 deathstar postfix/smtp[16142]: 8CBF11E12B5: to=<michael@my.domain>, relay=smtp.gmail.com[173.194.203.108]:587, delay=58297, delays=58297/0.05/0.71/0, dsn=4.7.0, status=deferred (SASL authentication failed; cannot authenticate to server smtp.gmail.com[173.194.203.108]: invalid parameter supplied) I have googled a lot, but I am not finding anything that matches this error message. I am not sure also what might have changed to cause this. Not sure if Google changed something or a package update broke something, etc. This is in Fedora 29, x86_64, postfix-3.3.1, and cyrus-sasl-lib-2.1.27-0.3rc7. output of postconf alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases command_directory = /usr/sbin compatibility_level = 2 daemon_directory = /usr/libexec/postfix data_directory = /var/lib/postfix debug_peer_level = 2 debugger_command = PATH=/bin:/usr/bin:/usr/local/bin:/usr/X11R6/bin ddd $daemon_directory/$process_name $process_id & sleep 5 html_directory = no inet_interfaces = localhost, $myhostname inet_protocols = ipv4 mail_owner = postfix mailq_path = /usr/bin/mailq.postfix manpage_directory = /usr/share/man meta_directory = /etc/postfix mydestination = $myhostname, localhost.$mydomain, localhost mydomain = my.domain myhostname = deathstar.my.domain mynetworks = 192.168.0.0/16, 127.0.0.0/8 newaliases_path = /usr/bin/newaliases.postfix queue_directory = /var/spool/postfix readme_directory = /usr/share/doc/postfix/README_FILES relayhost = [smtp.gmail.com]:587 sample_directory = /usr/share/doc/postfix/samples sendmail_path = /usr/sbin/sendmail.postfix setgid_group = postdrop shlib_directory = /usr/lib64/postfix smtp_sasl_auth_enable = yes smtp_sasl_password_maps = hash:/etc/postfix/sasl/passwd smtp_sasl_security_options = noanonymous smtp_tls_CAfile = /root/.acme.sh/my.domain/my.domain.cer smtp_use_tls = yes unknown_local_recipient_reject_code = 550 Any thoughts on what the error means and what I might need to change? Michael
