Hopefully one of you technical gurus on here might be able to tell me if I need to be concerned about this.
For years I was with Talk Talk and operated from a TalkTalk email address. However, over the last year I have been replacing this TalkTalk email address with a GMail one, and finally last month I switched my internet provider to BT, no longer concerned that I had any important stuff connected to the TalkTalk email.
Now, I do still receive the occasional email from that TalkTalk address, mainly shopping websites with offers I have signed up to in the past. However today when I logged in I had 4 email undeliverable failures in my TalkTalk inbox. The 2 files attached to each seem to make it clear that someone is sending emails using my TalkTalk email address, but that someone isn't me and where the recipient doesn't exist I am getting the bounce back. Should I be concerned or not?
This is the contents of one of the attachments - with my email address highlighted and anonymised.
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=talktalk.net; s=1605;
t=1482214583; bh=HqagavVSzrZECdfgc8DnUrUSRAqe+iYcA4WiDsV5aA4=;
h=To:From:Subject:Date;
b=N+eq+KdeFiiBx3s/kUo57J3bqzfLbA+E98uBmxtvP3NDDHDUEsgedIFagrTy5uyl0
XJkYAgWHMEMzRHWE9FveIcJUqK2cLs+uh38ZKkls5f6By5Bsun5Sggv711abY/qR4D
BqI8R8zkSqTn+QKvtlji7oq868JIZmy9FcZvPvlE=
X-Originating-IP: [220.225.67.161]
X-Spam: 0
X-OAuthority: v=2.2 cv=dsCZMBo4 c=1 sm=1 tr=0 a=bS5kECQT/4hWnO6No4G+Pg==:117
a=bS5kECQT/4hWnO6No4G+Pg==:17 a=9DvhAHx2yrWFMPxQWpQA:9 a=tBO0zlWvAAAA:20
a=Vi7OhBLYd79qlJLEUYUA:9 a=QEXdDO2ut3YA:10 a=_z7da1v7p6UA:10
a=Zc0611wEWO4A:10 a=WzAvSX0RKd4A:10 a=ddZT45GQ4RAA:10 a=AqFz3o5iRhsA:10
a=DMibb7HDAAAA:20 a=CyvJgaER28gA:10 a=b6rSoi0j7tMA:10 a=gW4sBiH6o7YA:10
a=ROAbuluwDIwA:10
MIME-Version: 1.0
To: nortek@carolina.rr.com
From: "Lauren" <xxxxxxxxxx@talktalk.net>
Subject: Fw: Re: r ofl Times ar e changing
Date: Tue, 20 Dec 2016 00:16:23 -0600
Importance: normal
X-Priority: 3
Content-Type: multipart/alternative;
boundary="_CF4E6779-A236-2C7D-82DD-BB598632B916_"
Message-ID: <eksqlkv-42z7pp-F5@talktalk.net>
X-CMAE-Envelope: MS4wfF0O587BRerg/MqUNTz6q7Ew9cF9Kx9BJQalF1ZiIT9TIfvBbwCbJfwCCvy34b2pQA/kdWpqtQ5mYY11L3diw8qPnIXT7dZC3VmTDROWeJEuWSOXG8CF
6MkNrTI22vfum9rRxagEHV0sbFm3IaGDiCGvI0FyqzepSq3J3LVHW+/9TjwSD5RD00z4JX/+ZNpgZg==
And here is the contents of the other file attached to the failure notification email from mailer-daemon@talktalk.net
Reporting-MTA: dns; cm5nec [10.103.251.5]
Received-From-MTA: dns; [127.0.0.1] [220.225.67.161]
Arrival-Date: Tue, 20 Dec 2016 06:16:23 +0000
Final-recipient: rfc822; nortek@carolina.rr.com
Diagnostic-Code: smtp; 554 Invalid mailbox: nortek@carolina.rr.com
Last-attempt-Date: Tue, 20 Dec 2016 06:16:27 +0000
As I said, I haven't got a clue on this stuff, so don't know whether to pursue or ignore
Cheers