Hello,
my bank ing-diba is using a marketing company to spam me. They have many
outgoing mail servers and I would like to block them all.
> Received: from mout-1605.artegic.net (mout-1605.artegic.net [144.76.159.198])
> (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
> (No client certificate requested)
> by infra.glanzmann.de (Postfix) with ESMTPS id 379A527D0A8A
> for <tho...@glanzmann.de>; Mon, 6 Aug 2018 20:23:32 +0200 (CEST)
So basically I would like to reject email from all mailservers having a reverse
name lookup matching the pattern *.artegic.net How can I obtain that?
Cheers,
Thomas
