Monitor SMTP (postfix) imap/pop3 (dovecot) ssl/tls certificate

Monitor SMTP (postfix) imap/pop3 (dovecot) ssl/tls certificate

Hello,

is there a way to check the valid time for certificates used by the above smtp, imap and pop3 servers?
Also other stats for smtp, imap, and pop3 would be nice (like mail delivered, mail bounced, users connected, ...)

Best regards,
Robert

Update: SSL Monitor is already capable of this (i thought it is limited to https).
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