hosted by liquidweb


Go Back   Web Hosting Talk : Web Hosting Main Forums : Colocation and Data Centers : Comcast emails
Reply

Forum Jump

Comcast emails

Reply Post New Thread In Colocation and Data Centers Subscription
 
Send news tip View All Posts Thread Tools Search this Thread Display Modes
  #1  
Old 06-20-2008, 12:04 PM
Corey Blaser Corey Blaser is offline
Psychotic Technophile
 
Join Date: Aug 2007
Location: A padded room
Posts: 582

Comcast emails


Is anyone else having a large number of Comcast email addresses being bounced back?

We found that it started two weeks ago and is spreading to other Comcast addresses that were previously working.

If you have received info on this or if it is happening to your network as well, would you please post it here?



Sponsored Links
  #2  
Old 06-22-2008, 10:50 PM
fbroce fbroce is offline
Junior Guru
 
Join Date: Aug 2006
Location: Duluth, GA
Posts: 201
Most of them are blacklisted by Sorbs. If you enable Sorbs RBL, it will bounce. This is fairly recent. My guess is Comcast wants you to use their mailservers so if you run your own or try to relay through a server with a Comcast IP, you have to take steps to avoid the bounce.

__________________
fred b.
www.broce.net

  #3  
Old 06-23-2008, 01:51 AM
RDOSTI RDOSTI is offline
Web Hosting Master
 
Join Date: Feb 2005
Location: India
Posts: 1,048
Any idea if this is common for all remote servers as well sending emails to comcast servers? Does comcast have its own RBL IP system so you can see if your IP's banned and then request an unbanning.

Regards

Sponsored Links
  #4  
Old 06-23-2008, 05:56 AM
fbroce fbroce is offline
Junior Guru
 
Join Date: Aug 2006
Location: Duluth, GA
Posts: 201
I cannot answer either of your questions. You can check blacklisting at dnsstuff.com or similar sites. As far as unblacklisting, I expect if you have a Comcast business class account you won't encounter this problem and could rightfully request your IP to be "clean". If you have a residential account, then by definition it has a dynamic IP address and may be blacklisted.

I do not know if Comcast supports the blacklisting or if it just evolved by the sheer quantity of Comcast IP's out there and and number of unauthorized servers or spammers using their IP's.

__________________
fred b.
www.broce.net

  #5  
Old 06-23-2008, 09:20 AM
nbyteme nbyteme is offline
Newbie
 
Join Date: Aug 2007
Posts: 24
one of my clients at work is using microsoft's frontbridge as a archiving solution -- of which their outbound emails go through frontbridge. about a week ago, they started getting comcast bounces and when we contacted FB, they said they were blacklisted on comcast's list. they (FB) said it has since been removed but the customer forwarded me another bounce back over the weekend ...

  #6  
Old 06-23-2008, 09:53 AM
AlternativeHost AlternativeHost is offline
Junior Guru Wannabe
 
Join Date: Sep 2007
Location: Flint, Michigan
Posts: 35
We are having the same problem. Been on the phone with comcast for the last week. They state that we are not blacklisted however the mail server still rejects. This started about 2 weeks ago.

  #7  
Old 06-23-2008, 10:02 AM
fbroce fbroce is offline
Junior Guru
 
Join Date: Aug 2006
Location: Duluth, GA
Posts: 201
I doubt if the Comcast csr would know what blacklistings are. I recently switched to Comcast telephone and their callerid database is woefully out of date. I called customer service and he said it was the problem of the other providers (AT&T and Charter). When I had AT&T all the numbers were correctly identified!

Re the Comcast email..I expect if you use smarthost (sendmail) or something similiar and relay your outgoing mail trough Comcast mail servers you won't have any problem.

__________________
fred b.
www.broce.net

  #8  
Old 06-25-2008, 12:59 AM
Corey Blaser Corey Blaser is offline
Psychotic Technophile
 
Join Date: Aug 2007
Location: A padded room
Posts: 582
When we started receiving bounce backs, I also spoke with a tech that said we were not black listed either. I ran both our IPs and domain names past him... he was not a csr, but a noc tech.

Reply

Related posts from TheWhir.com
Title Type Date Posted
Hosting Data Outside the US? It's Not Safe from US Search Warrants Web Hosting News 2014-08-01 09:49:20
Level 3 Accuses Six ISPs in Europe and US of Deliberately Slowing Traffic Web Hosting News 2014-05-09 11:24:27
Comcast Accounts for 49 Percent of New Broadband Subscribers in 2013: Report Web Hosting News 2014-05-01 08:34:06
Comcast’s Plans to Buy Time Warner Cable Problematic for Internet Users, Web Hosts Web Hosting News 2014-02-14 09:41:05
Rackspace Integrates Mailgun into Cloud Control Panel Web Hosting News 2013-05-23 14:55:51


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes
Postbit Selector

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Forum Jump
Login:
Log in with your username and password
Username:
Password:



Forgot Password?
Advertisement:
Web Hosting News:
WHT Membership
WHT Membership



 

X

Welcome to WebHostingTalk.com

Create your username to jump into the discussion!

WebHostingTalk.com is the largest, most influentual web hosting community on the Internet. Join us by filling in the form below.


(4 digit year)

Already a member?