SMTP+STARTTLS

list Grant Taylor
Thu, 01 Jan 2026 13:55:19 -0600
Message-Id: <user-3ae2fd589031@xymon.invalid>

Hi,

Is there a way to have Xymon monitor the TLS certificate on SMTP while using SMTP's STARTTLS verb?

I'm already monitoring the certificate on SMTPS (SMTP with implicit TLS on port 465) but I'd like to also monitor the certificate on SMTP+STARTTLS (SMTP with explicit TLS via STARTTLS verb on port 25).

I've got some weird systems where the ports aren't using the same daemon / config, as such I can't rely on both being the same.


-- 
Grant. . . .