Thank you Brian. I know. I already use smtp_starttls to check the connection with mail server. I found smtp_starttls also exposed ssl cert related metrics. But now I want to take ssl cert check out from the job which is for checking SMTP. Because I want to set different scrape_interval and evaluation inverval for the cert check.
Any good suggestion? On Tuesday, August 9, 2022 at 4:17:34 PM UTC+8 Brian Candler wrote: > Sigh. We've been through all this with you before in great detail. > https://groups.google.com/g/prometheus-users/c/LZbihDncIig/m/cqAA-UtdAQAJ > > Port 587 is SMTP submission, and it does not perform TLS on connection. > Try "telnet dns 587" and you'll see it responds in plain text, which is > just what the error message told you: "tls: first record does not look like > a TLS handshake" > > To get it to do TLS, you need to send the "starttls" command before > starting the TLS negotiation, like this example > <https://github.com/prometheus/blackbox_exporter/blob/master/example.yml#L91-L104> > and > in the thread linked above. > -- 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/35965fe3-8e8a-44b1-9f8f-9ef311fc0986n%40googlegroups.com.
