said by Mele20:Geez...now I have to inform several persons that I will no longer communicate with them unless they use an email address other than Yahoo. :(
Not just Yahoo! There are a few ISPs which use Yahoo! servers for their email. Rogers Cable, of Canada. BT Internet, of the UK. And both AT&T and Verizon in the US. I don't know all of the domains involved, but there are eleven AT&T domains, a result of their assorted mergers over the years:
• ameritech.net
• att.net
• bellsouth.net
• flash.net
• nvbell.net
• pacbell.net
• prodigy.net
• sbcglobal.net
• snet.net
• swbell.net
• wans.net
Any of those can go through Yahoo! servers:
X-Apparently-To: {%User%}@pacbell.net via 68.142.199.153; Wed, 13 Jul 2011 10:18:14 -0700
X-Originating-IP: [65.54.190.84]
Received: from 207.115.20.163 (EHLO flpd246.prodigy.net) (207.115.20.163)
by mta1034.sbc.mail.mud.yahoo.com with SMTP; Wed, 13 Jul 2011 10:18:14 -0700
X-Originating-IP: [65.54.190.84]
Received: from bay0-omc2-s9.bay0.hotmail.com (bay0-omc2-s9.bay0.hotmail.com [65.54.190.84])
by flpd246.prodigy.net (8.14.4 IN/8.14.4) with ESMTP id p6DHIDB2000304
for <{%User%}@pacbell.net>; Wed, 13 Jul 2011 10:18:14 -0700
Received: from BAY159-DS15 ([65.54.190.125]) by bay0-omc2-s9.bay0.hotmail.com with Microsoft SMTPSVC(6.0.3790.4675);
Wed, 13 Jul 2011 10:18:12 -0700
X-Originating-IP: [173.228.18.196]
X-Originating-Email: [{%User%}@live.com]
Message-ID: <BAY159-ds15622241073AA058AD03F5DE470@phx.gbl>
From: "NormanS" <{%User%}@live.com>
To: <{%User%}@pacbell.net>
Subject: [TEST] Routing ...
Date: Wed, 13 Jul 2011 10:17:18 -0700
X-Mailer: Microsoft Windows Live Mail 15.4.3508.1109
X-MimeOLE: Produced By Microsoft MimeOLE V15.4.3508.1109
X-OriginalArrivalTime: 13 Jul 2011 17:18:12.0784 (UTC) FILETIME=[D8530300:01CC4180]
Another ISP, DSL Extreme, has a similar arrangement with Gmail. And can be used for hosting domain email for any of a number of domains not related to ISPs. My guess is, you will just have to abandon email altogether! ;)