Laptop getting hundreds of delivery status notification (failure) that are spam

My user has a Google account for SMTP and a prodigy.net.mx account for POP. He is getting these hundreds of delivery status notification (failure) that contain a porn link. (Never clicked on the link but the wording is porn).

Any ideas on how I can stop this?

Here's what was in one of the emails, minus the bad language and with an xxx before any email addresses:

From:
"Daniel Mcintyre" <xxx@prodigy.net.mx>

Date:
11/11/2014 3:48 PM
To:
xxx@yahoo.com

X-IronPort-AV:
E=Sophos;i="5.07,362,1413262800"; d="scan'208,217";a="6537892"
Received:
from nlpiport22.prodigy.net.mx ([148.235.52.109]) by nlpiport16.prodigy.net.mx with ESMTP; 11 Nov 2014 16:48:10 -0600
X-IronPort-Anti-Spam-Filtered:
true
X-IronPort-Anti-Spam-Result:
AoNaADuRYlREkXOMPGdsb2JhbAANNRqCSIEaWQGDb4l3FapQAgMGgykBAVYMP4Efi3kJgWWHSwKBNwEBAQEBBgEBAQEUJIVbAQIbNDSIezi3D4JmlRCGOop3hDUFkjFjg3CJEpY2AQEBBwEBAQEBgiZqgksBAQE
Received:
from s0106602ad090a6ee.cg.shawcable.net (HELO [192.168.243.237]) ([68.145.115.140]) by nlpiport22.prodigy.net.mx with ESMTP; 11 Nov 2014 16:48:10 -0600
Content-Type:
multipart/alternative; boundary="===============4923497437629272293=="
MIME-Version:
1.0
Message-ID:
<54629247.999005@prodigy.net.mx>

He uses Thunderbird as his email client.
mel200Asked:
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JohnBusiness Consultant (Owner)Commented:
As I understand it, Gmail has a decent spam filter. You want to turn the spam filter way up to trap spam. Once done, whitelist any false positives.

The other ISP should have a spam filter as well and that wants to be turned up.
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mel200Author Commented:
OK, thanks. I'll give those a try!
0
Michael DyerSenior Systems Support AnalystCommented:
He is getting these notifications because someone is sending out spam and using his email address as the reply to address.  Spammers do this to try to defeat the spam filters.  You should be able to set up a message filter to move these to a junk box - at least that will clean up his mailbox for him.  Go here for more information on filters:  https://support.mozilla.org/en-US/kb/organize-your-messages-using-filters
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mel200Author Commented:
Thanks, I'll look that over. I was afraid of that.
0
JohnBusiness Consultant (Owner)Commented:
I had a client with this, and we had to change his email password. We did that, cleaned up the mess, and then the problem ceased.

I use a separate spam filter and I am very careful not to download any suspicious email into Outlook. I use Pop Peeper to filter it first.
0
mel200Author Commented:
ok, thanks for that advice, too! :)
0
mel200Author Commented:
Thanks, changing passwords has helped immensely, and we'll use the other tips as well.
0
JohnBusiness Consultant (Owner)Commented:
@mel200  - Thanks for the update and I was happy to help.
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