-------- Original Message -------- Subject: ESMTP Filtering by 46.166.163.163 Date: Wed, 30 Jan 2013 18:57:53 +0100 From: Moritz Bartl <moritz@torservers.net> To: abuse@santrex.net Hi, Your customer at 46.166.163.163 runs a Tor exit relay (hooray! great!). The server should be configured in a way that does NOT tamper with outgoing or incoming traffic, but it looks like Santrex (you guys) are at least actively filtering/redirecting ESMTP Port 587 traffic. Trying 74.125.137.108... Connected to smtp.gmail.com. Escape character is '^]'. 220 spamfilter.santrex.net ESMTP Postfix Trying 192.0.43.10... Connected to example.com. Escape character is '^]'. 220 spamfilter.santrex.net ESMTP Postfix Please turn that off, or at least let your customer know about it so they can block the affected ports. Thanks! -- Moritz Bartl https://www.torservers.net/