Comcast supports port 25 as long as you are sending via "smtp.comcast.net".  
Sending via any other outgoing mail server on port 25 is blocked by Comcast.
I believe Comcast is under investigation for bandwidth throttling in certain 
geographic markets.  No one knows of any other strange tests being conducted by 
Comcast, but you never know.
-Joe
-----Original Message-----
From: "Robert M. Perez" <[EMAIL PROTECTED]>
Sent 3/12/2008 1:13:59 PM
To: [email protected]
Subject: RE: [IMail Forum] Comcast IssueI don't think comcast supports port25 
anymore.
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Imail Admin
Sent: Wednesday, March 12, 2008 1:01 PM
To: [email protected]
Subject: Re: [IMail Forum] Comcast Issue
We had a client who uses Comcast and suddenly found one day that all
outgoing mail was blocked.  Comcast swore it wasn't them but I tested
everything from the desktop PCs to the router and found that mail made it to
Comcast but never made it to us.  One day, after a month or so, the problem
went away.  Moral of the story: Comcast can do a lot of weird stuff without
even knowing that they are doing it.  It is quite possible that they are
blocking your client's messages with attachments and they don't even realize
it.
Ben
----- Original Message -----
From: "Steve Hyer" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Wednesday, March 12, 2008 7:44 AM
Subject: [IMail Forum] Comcast Issue
>I have a client who uses comcast as his SMTP and he tried to send to a
>domain on my mail server that I host and when he sends Email with any
>attachments, they do not reach our server.  Has anyone else experienced
>anything like this?
>
> Thanks,
> SJH
>
> To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html
> List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/
> Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/
>
>
To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html
List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/
Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/
To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html
List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/
Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/

Reply via email to