18:15 <liangent> hmm found the bounces 18:15 <liangent> but they're in Spams 18:15 <liangent> it says "Why is this message in Spam? We've found that lots of messages from mail.tools.wmflabs.org are spam." 18:15 <liangent> in Gmail
Delivered-To: firstname.lastname@example.org Received: by 10.194.122.129 with SMTP id ls1csp815676wjb; Mon, 6 Jul 2015 08:30:13 -0700 (PDT) X-Received: by 10.140.217.147 with SMTP id n141mr59509712qhb.43.1436196611716; Mon, 06 Jul 2015 08:30:11 -0700 (PDT) Return-Path: <> Received: from mail.tools.wmflabs.org (mail.tools.wmflabs.org. [188.8.131.52]) by mx.google.com with ESMTPS id 91si21187163qgo.20.2015.07.06.08.30.11 for <email@example.com> (version=TLSv1 cipher=RC4-SHA bits=128/128); Mon, 06 Jul 2015 08:30:11 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of mail.tools.wmflabs.org designates 184.108.40.206 as permitted sender) client-ip=220.127.116.11; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of mail.tools.wmflabs.org designates 18.104.22.168 as permitted sender) smtp.mail= Received: from Debian-exim by mail.tools.wmflabs.org with local (Exim 4.76) id 1ZC8LT-00058W-3m for firstname.lastname@example.org; Mon, 06 Jul 2015 15:30:11 +0000 X-Failed-Recipients: -email@example.com, firstname.lastname@example.org, email@example.com, firstname.lastname@example.org, email@example.com, firstname.lastname@example.org, Template-Dyk@tools.wmflabs.org, User-Liangent@tools.wmflabs.org, User-Liangentemail@example.com Auto-Submitted: auto-replied From: Mail Delivery System <Mailer-Daemon@tools.wmflabs.org> To: firstname.lastname@example.org Subject: Mail delivery failed: returning message to sender Message-Id: <E1ZC8LT-00058Wemail@example.com> Date: Mon, 06 Jul 2015 15:30:11 +0000
The headers are okay - and passed SPF so that's not it.
Gmail uses strange heuristics to decide what to think of as spam, at least part of which includes how many people have junked email from the domain, and spamassassin-like tests. I've noticed in the past that email containing IP addresses, in particular, tend to be disliked by spam filter.
I'll try to see if we have a contact at Google we can poke about this.