I'm using GW2012 on a windows server 2012R2.
Sometimes there is a storm of mails using a provider that is not listening in a spamblock-list and our customers also use this provider.
Therefore mails will pass throu but the return path is different to the sending domain.
Received: from mx3.bon.at ([126.96.36.199])
by mail.cor.at with ESMTP; Tue, 27 Feb 2018 05:55:13 0100
Received: from genera.govtjobsmag.com (genera.digloot.com [188.8.131.52])
by mx3.bon.at (Postfix) with ESMTP id 694D7800E0
for <firstname.lastname@example.org>; Tue, 27 Feb 2018 05:50:32 0100 (CET)
is there a possibility to check the receiveed-domain with the return-path-domain in GWIA or GW-client and if it doesn't pair, the mail wil be reject?
best regards Rupert