Tuesday, 15 January 2013

Timeout communication problem encountered during transmission. This is a Novell GroupWise SMTP Error in Outlook

SMTP Error 420 : In our experience only Novell GroupWise servers use this error (we use GroupWise!).
You will get a GroupWise GWIA (GroupWise Internet Agent) 420 TCP Write Error or 420 TCP Read Error if there are communication problems during transmission of the actual message after the sending and receiving servers
have actually connected. A small number of 420 SMTP errors is normal as occasional peaks of Internet usage may delay the transmission of an email with attachment so much that a timeout occurs. When a timeout occurs on a

domain’s DNS is set up correctly). In an ideal world a well behaved recipient server should really be issuing your GroupWise server with a 554 error rather than timing out and causing the GroupWise GWIA to fault with a 420 error.


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