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Sending Attachement Timesout

Discussion in 'General Discussion' started by mickalo, Nov 1, 2006.

  1. mickalo

    mickalo Well-Known Member

    Apr 16, 2002
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    N.W. Iowa

    we have a customer that has no problems sending out emails, except when they add a file attachment. They sent one today with a 240kb file attachment this was the error message they got.
     Your server has unexpectedly terminated the connection. Possible causes for 
     this include server problems, network problems, or a long period of 
     inactivity. Subject 'Fw: test', Account: '', 
     Server: '', Protocol: SMTP, Server Response: '421 SMTP incoming data timeout - closing 
     connection.', Port: 26, Secure(SSL): No, Server Error: 421, Error Number: 
    I can not find anything in the logs that would shed light on the problem on our server so I am assuming this is a problem on their end. They use their "" as their outgoing SMTP mail server, using both port 25 & 26 and get the same timeout error. But no problems sending out emails w/o an attachment? I sent out an attachment through our mail server with PDF approx., 1MB in size with no problems. So I am assuming this is a problem on their end or internet connection ??

    Any help or suggestions would be much appreciated.


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