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Disconnect befor sending ACK

Printed From: LogSat Software
Category: Spam Filter ISP
Forum Name: Spam Filter ISP Support
Forum Description: General support for Spam Filter ISP
Printed Date: 17 November 2018 at 3:03pm

Topic: Disconnect befor sending ACK
Posted By: ois
Subject: Disconnect befor sending ACK
Date Posted: 09 August 2011 at 7:41am
in some cases SpamFilter disconnected before sending ACK.
The sending SMTP recognizes this as an error and repeats the connection.
So the recipient gets the mail up to 30 times an more.

Posted By: LogSat
Date Posted: 09 August 2011 at 4:14pm
Are you referring to the SYN, SYN-ACK, ACK sequence, which establishes an actual TCP connection? In this case, please note that we rely on the Windows subsystem to handle that part of the connection - once it is established and SpamFilter has a connected IP, then SpamFilter kicks in and starts the filtering process.

SpamFilter does force a disconnect of the remote servers on specific occasions, but these all occur after the SYN, SYN-ACK, ACK sequence. If you could provide some more details (and possibly zip and email us a section of SpamFilter's activity logfile around the time this happened to support at we can try to help more.

Roberto Franceschetti" rel="nofollow - LogSat Software" rel="nofollow - Spam Filter ISP

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