In case you don't know what this error means(TCP_read_dot_error)...

In SMTP, when sending an email, you are susposed to send <cr>.<cr> to
terminate or end the message that you sent. Surgemail is complaining
that someone is sending an email and not ending the session with a
<cr>.<cr> pattern.

Comcast is good for doing that. They like to send an email and then not
close the TCP connection. Surgemail will eventually give up and close
the connection with a tcp_read_dot_error. Comcast is so big and busy,
they try to keep the TCP connection open after sending an email so that
they don't have to open it again to send yet another message.

There are other reasons for this to happen, but that is a common cause
and hopefully this helps you understand the message and what to look for.

Lyle

VinnyHIDDEN@@Dell.com wrote:
> Do you have any type of stateful firewall hardware/software that is in between that could be at fault, or more likely an antivirus application on the new server that is interfering?
>
> -Vinny
>
> -----Original Message-----
> From: Kevin Gagel [mailtoHIDDEN@cnc.bc.ca] 
> Sent: Tuesday, March 01, 2011 2:26 PM
> To: SurgeMail List
> Subject: [SurgeMail List] Tcp_read_dot error - meaning what? Why? How to diagnose? Suggestions...
>
> I got a report of a message not getting through from one of our Gmail users. Looking at their error message, its obvious that our gateway server had trouble communicating with our internal surgemail server. 
> Here is the error:
> 554 Failure tcp_read_dot 550 549 seconds, got 13356 bytes (Socket Timeout after 549 seconds) (in reply to end of DATA command)
>
> So, I did search of the logs to see how prevalent this is. This errors shows up 14 times today, 47 times for all of February and 5 times for January. Zero times for December, November, October and 1 time in September.
>
> The server was replaced January 31st. So it looks like the increase is related to the new server.
>
> But what does it mean??? Obviously there is network issues between the two machines but how am I going to diagnose this?
>
>
> Kevin W. Gagel
> Network Administrator
> College of New Caledonia
> (250)562-2131 local 5448
>
>
>
>
>
>
> -------------------------------------------------------------------
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> Visit us at http://www.cnc.bc.ca
> Virus scanning is done on all incoming and outgoing email.
> Anti-spam information for CNC can be found at http://gateway.cnc.bc.ca
> -------------------------------------------------------------------
>
>
>