Problem from Comcast Network to The Planet

Bryan Irvine sparctacus at
Fri Mar 5 18:09:22 CST 2010

On Fri, Mar 5, 2010 at 1:33 PM, Zachary Frederick <zcfrederick at> wrote:
> We have been having a problem emailing to a customer whose server is hosted by The Planet ( Our mail server is hosted in-house on a comcast business connection.
> IP address of our server is:
> Customers mail server is:
> I cannot telnet to port 25 on their server, and they cannot telnet to port 25 on ours.
> If I try to connect to their mail server from a different network such as my home internet connection, I can connect.
> We do not do any firewalling that would block this in anyway. We were able to send and receive email to them when we used Qwest for our connection, before we switched to Comcast.
> Comcast has said the problem is not on their end because it times out at The Planet.
> The Planet doesn't have much interest in speaking with me, because I'm not their customer.
> Not sure what to do at this point.

Can you hit the submission port?  (587)


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