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Communications error for certain domains.
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Communications error for certain domains. - 18.Jan.2007 3:45:34 PM
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wavecrestcorp
Posts: 9
Joined: 18.Jan.2007
Status: offline
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Hi, Our Exchange 5.5 server died the week we were doing a company relocation. Because of time restrictions, I ended up loading the Exchange 5.5 on a different server with Windows 2000 Server. I recreated the user accounts (around 45) and have loaded IMS. The problem I am having is that there seem to be certain domains that I am having trouble sending to. For example, if we try to send to anyone on the comcast.net domain we get an error message such as the following:
Your message did not reach some or all of the intended recipients.
Subject: test 3
Sent: 1/18/2007 1:08 PM
The following recipient(s) could not be reached:
'***@comcast.net' on 1/18/2007 1:08 PM
Unable to deliver the message due to a communications failure
The MTS-ID of the original message is: c=US;a= ;p=WAVECRESTCORP;l=HUBBLE-070118190731Z-1598
I can send to other domains without an issue. I tried to look at the header under options to see what information was there, but it is blank. I also sent an email to comcast.com to see what type of information I would get back and I received the following:
Your message did not reach some or all of the intended recipients.
Subject: test 4
Sent: 1/18/2007 1:23 PM
The following recipient(s) could not be reached:
'***@comcast.com' on 1/18/2007 1:23 PM
The recipient name is not recognized
The MTS-ID of the original message is: c=US;a= ;p=WAVECRESTCORP;l=HUBBLE-070118192231Z-1615
MSEXCH:IMS:WAVECRESTCORP:EDINA:HUBBLE 3550 (000B09AA) 550 Mailbox unavailable or access denied - ***@comcast.com
Again, there was no header information for this email, but am at least getting a 550 error. I contacted comcast to see if we were getting blacklisted by them and they asked me to send them our IP (will try this). We have other domains that this happens to also.
Our firewall came across to our new location with just a change of IP address.
Any ideas that I should do? Thanks, Rich
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RE: Communications error for certain domains. - 19.Jan.2007 1:27:27 PM
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wavecrestcorp
Posts: 9
Joined: 18.Jan.2007
Status: offline
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Disregard this post. Found out the IP address had been on comcast blocklist from a while back so they removed it and it is now working.
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RE: Communications error for certain domains. - 6.Feb.2007 3:14:58 PM
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jcramin
Posts: 1
Joined: 6.Feb.2007
Status: offline
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I am having the same problem and COMCAST does not seem to be able to tell us anything.
I was getting the same kind of message like this:
Your message did not reach some or all of the intended recipients.
Subject: test 3
Sent: 1/18/2007 1:08 PM
The following recipient(s) could not be reached:
'***@comcast.net' on 1/18/2007 1:08 PM
Unable to deliver the message due to a communications failure
The MTS-ID of the original message is: c=US;a= ;p=WAVECRESTCORP;l=HUBBLE-070118190731Z-1598
I was able to get mail to try and send but then I get HOST UNREACHABLE.
It is like my EXCHANGE SERVER does not see COMCAST.NET
Now i did find out COMCAST blocks ports 135 and 445 would that cause mail from my exchanger server not to get to comcast users ? and if so what can I do to fix that ?
Thanks,
J
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RE: Communications error for certain domains. - 6.Feb.2007 4:26:44 PM
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WRAiTHY
Posts: 75
Joined: 8.Mar.2005
From: San Diego
Status: offline
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have you checked to make sure you're not on the spam blacklist for comcast yet?
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