Below is the header information (I have anonymized the information) from an email send a few days ago that was reported to me because when User1 replied to it, instead of it going back to ProblemUser, it went to User3. Upon examination of the header, we can see that ProblemUser's reply to address appears to be setup as User3 - there is no rhyme or reason behind this. I just checked again for the sake of sanity and ProblemUsers email reply to setting is still set toproblemuser@domain.com. I have no clue why this is happening. I have just asked problemuser to send me an email to verify its still an issue but wanted to get some feedback in the meantime. Header reads as follows:
Received: from EXCHANGE.domain.com ([192.168.9.3]) by EXCHANGE
([192.168.9.3]) with mapi; Tue, 29 Jan 2013 18:34:16 -0500
Content-Type: application/ms-tnef; name="winmail.dat"
Content-Transfer-Encoding: binary
From: "Problem User" <problemuser@domain.com>
To: "User1" <user1@domain.com>
CC: "User2" <user2@domain.com>
Date: Tue, 29 Jan 2013 18:34:16 -0500
Subject: Subject here
Thread-Topic: Subject here
Thread-Index: Ac3+eScJ0XpNMRdnQzmNryMaNVWbdg==
Message-ID: <BBE2D896C7EA7648B9591373F98FF6F41A8A7B5E2E@EXCHANGE>
Reply-To: "User3"