E-Mail system check by round trip email

Hi!

Is there any check for an E-mail system that sends an email via an
(external) smtp server and looks if that email is received (in a set
timeframe) on a pop3/imap account?

If not, how do you ensure that incoming mails reach your local server?

Infrastructure:
We have an external mail provider, putting all mail in a catchall account.
A tool called “popcon” fetches the mails from that account, checks for
viruses and has a rudimentary spam detection, and then delivers via our
local Exchange server to the original recipients mailboxes.

So we have multiple spofs.
I already surveil smtp, pop and imap on both the external and our
Exchange server.

But that won’t find popcon failures, or other delivery problems.

Dipl.-Inform. Marco Dieckhoff
Project Manager IT/ORG

BREMSKERL-REIBBELAGWERKE EMMERLING GMBH & CO KG
Brakenhof 7, 31629 Estorf-Leeseringen (Germany)
P.O. Box 1860, 31568 Nienburg (Germany)
phone: +49 (0) 5025 978 120
mail: marco.dieckhoff@bremskerl.de

Geschï¿œftsfï¿œhrer der GmbH / General Manager: Reinhard Gramatke
Amtsgericht Walsrode / Registration no.: KG: HRA100282, GmbH: HRB100520

Sorry if I bothered you, as you may have noticed I asked on the wrong
mailinglist. (Wanted to ask about nagios)

Thanks for the answers anyway :wink:

Marco Dieckhoff
Project Manager IT/ORG

BREMSKERL-REIBBELAGWERKE EMMERLING GMBH & CO KG
Brakenhof 7, 31629 Estorf-Leeseringen (Germany)
P.O. Box 1860, 31568 Nienburg (Germany)
phone: +49 (0) 5025 978 120
mail: marco.dieckhoff@bremskerl.de

Geschï¿œftsfï¿œhrer der GmbH / General Manager: Reinhard Gramatke
Amtsgericht Walsrode / Registration no.: KG: HRA100282, GmbH: HRB100520