comcast.net delayed email

[robmueller]

There's a large number of deferred emails in our outgoing queue to comcast.net today.

The problem was that their domain was hijacked.

http://www.dslreports.com/shownews/C...n-Hacked-94826

The "stale" DNS nameserver records had a large TTL time on them, so the comcast.net domain wasn't resolving on our systems for about 24 hours.

I've cleared the records from the cache now, so email to comcast.net should be going through now.

Rob

[eewanco]

I am getting bounces on every email I send to one particular Comcast user. He is getting email from other people, and can send himself email from an external account. For my part I can send email to other domains. Anyone else getting these? Here is the bounce message:

This is the mail system at host out1.messagingengine.com.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

The mail system

<user@comcast.net>: Host or domain name not found. Name service error
for name=comcast.net type=A: Host found but no data record of requested
type



Reporting-MTA: dns; out1.messagingengine.com
X-Postfix-Queue-ID: 0A1A7111373
X-Postfix-Sender: rfc822; my@email.com
Arrival-Date: Thu, 29 May 2008 20:18:35 -0400 (EDT)

Final-Recipient: rfc822; user@comcast.net
Original-Recipient: rfc822;user@comcast.net
Action: failed
Status: 5.4.4
Diagnostic-Code: X-Postfix; Host or domain name not found. Name service error
for name=comcast.net type=A: Host found but no data record of requested
type



Subject:
Testing
From:
Eric Ewanco <my@email.com>
Date:
Thu, 29 May 2008 20:18:28 -0400
To:
Comcast User <user@comcast.net>

Testing, let me know if you get this

[claven]

Yes, I got the same bounce message in response to email I tried to send last night to two separate Comcast accounts. The rest of the recipients on the distribution list received my message.

[claven]

Whoops. Sorry, didn't read all of the posts in order. Rob has already addressed this issue and provided some detail in a related thread.

[robmueller]

Can an admin merge this with the other thread I started so we don't bounce between the two...

Rob

[Sherry]

Mod: Threads are now merged into this one.