For a long time I had a second email account at myway.com which I was never able to cancel, having had no response to repeated requests via email. I don't know what to make of their service. It seemed almost abandoned. It never worked that well. I noticed that myway.com appears here, though that's prob. because I gave it to ATT or I gave my ATT email to myway.

Expanded header (partial):

From: AT&T IISS Network Security <netsec@att.net>
Subject: Spam advisory for SBC Account Number XXXXXXXX (issue 9277)
Date: December 24, 2015 7:33:15 PM EST
To: myID@myway.com, My Name <myID@sbcglobal.net>
X-Apparently-To: myID@sbcglobal.net; Fri, 25 Dec 2015 00:33:23 +0000
Received-Spf: none (domain of someattservice.net does not designate permitted sender hosts)