On CiviCRM 4.5.5, I have an email address of contactus@example.org configured under Administration > Communication > From Address.
When I send the test email the reply to address is the correct email address.
However when I sent a membership renewal reminder the address is a random set of letters and numbers viz:
Return-Path: <b.85.1343.f05de58212341234@example.org> Reply-To: <r.85.1343.f05de5812341234@example.org> From: "APMA" <contactus@example.org> To: "Paul Murdoch" <prmurd@example.net> Subject: [CiviMail Draft] Your APMA membership Date: Sun, 14 Jun 2015 20:27:25 +1000 Message-ID: <E1Z458P-001P0k-9z@s42.example.net> MIME-Version: 1.0
I am guessing this has to do with the automated tracking of newsletters or similar. However I would like the reply to email address to be contactus@example.org.
How do I debug, track this down and correct this?