I have setup an postfix with TLS and DKIM enabled and it can be send email with sendmail command, however I can’t send email through TestConnection button or ResetPassword form.
Steps to reproduce
- setup a mattermost with docker hub team-edition:release-7.2
- setup postfix with docker and works on sendmail command.
- Configure the mattermost to use the postfix and press the test conenction button
Expected send email to System admin email
It shows not errors on mattermost test connection button, however I see the following error on postfix.
relay=aspmx.l.google.com[18.104.22.168]:25, delay=0.88, delays=0.05/0/0.41/0.42, dsn=5.7.1, status=bounced (host aspmx.l.google.com[22.214.171.124] said: 550-5.7.1 [126.96.36.199] Messages missing a valid messageId header are not 550 5.7.1 accepted. g4-20020a655944000000b0042b260400dcsi1070399pgu.507 - gsmtp (in reply to end of DATA command))