Look at alertmanager logs: journalctl -eu alertmanager (if you are running alertmanager under systemd)
Look at the network traffic: tcpdump -i <interface> -nn -s0 -vA tcp port 587 Could it be that your target host doesn't accept TLS? Could it be that your target host has an invalid TLS certificate, or a cert which doesn't match the hostname in "########:587"? If you want to keep TLS but disable cert verification, then unfortunately there's no global smtp_tls_config; as far as I can see you have to set tls_config under the email_configs section of every individual receiver. See: https://github.com/prometheus/alertmanager/issues/1554 https://github.com/prometheus/alertmanager/pull/1528 https://prometheus.io/docs/alerting/latest/configuration/#email_config On Wednesday, 15 September 2021 at 19:36:47 UTC+1 [email protected] wrote: > Hi Team, > > i had alertmanger configured in my env now i have changed smtp server and > now it's showing "Prometheus_Alertmanager_Notification_Failing" error. My > alertmanager config is as below. > > > Please help what wrong i am doing > > > global: > smtp_smarthost: '########:587' > smtp_from: 'alertmanager@####.com' > smtp_require_tls: true > smtp_auth_username: '#######' > smtp_auth_password: '########' > -- 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 [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/prometheus-users/d26e0adf-6884-40ac-a937-275e065c6951n%40googlegroups.com.
