Thanks for your reply! I tried it with version 0.19.0, 0.20.0 and 0.21.0
IP address is 100% correct configured in the Gsuite relay settings. I can connect from command line as you mentioned and I can send mails from this host with local postfix using smtp-relay.gmail.com as relayhost. b.ca...@pobox.com schrieb am Dienstag, 29. September 2020 um 11:07:12 UTC+2: > Alertmanager version? > > Try logging into the same host where alertmanager runs, and running the > following: > > openssl s_client -connect smtp-relay.gmail.com:587 -starttls smtp > ehlo mydomain.com > mail from:<alertm...@mydomain.com> > > See if you get an error like this: > > 550-5.7.0 Mail relay denied [<address>]. Invalid credentials for > 550-5.7.0 relay for one of the domains in: mydomain.com (as obtained from > HELO and > 550-5.7.0 MAIL FROM). > 550-5.7.0 Email is being sent from a domain or IP address which isn't > registered > 550-5.7.0 in your G Suite account. Please login to your G Suite account and > 550-5.7.0 verify that your sending device IP address has been registered > within > 550-5.7.0 the G Suite SMTP Relay Settings. For more information, please > visit > 550 5.7.0 https://support.google.com/a/answer/6140680#maildenied > > One possibility is that your host has gained a new external IP address (on > IPv6 perhaps?) which has not been registered. > -- You received this message because you are subscribed to the Google Groups "Prometheus Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to prometheus-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/prometheus-users/63ca0bd6-6614-4bb6-8d53-8052d622397an%40googlegroups.com.
