> Any suggestions on how I can prevent this behaviour from > holding up my system in the future ??
Implement a timeout which would reset the connection even before it is established. A simple TTimer would do. Contribute to the SSL Effort. Visit http://www.overbyte.be/eng/ssl.html -- [EMAIL PROTECTED] Author of ICS (Internet Component Suite, freeware) Author of MidWare (Multi-tier framework, freeware) http://www.overbyte.be ----- Original Message ----- From: "Erich Kuba" <[EMAIL PROTECTED]> To: "ICS support mailing" <[email protected]> Sent: Thursday, September 14, 2006 2:31 AM Subject: [twsocket] Interesting connect problem > Hi all, > > I have recently noticed a couple of interesting entries in one of my system > logs from a Mail Relay Agent written using the TSMTPCli component, which > raises a few interesting questions. > > Firstly here is a small extract from the system log > > > 19:26:28 - Connecting to mta1.grp.scd.yahoo.com > > 19:26:47 - Disconnected from mail server - mta1.grp.scd.yahoo.com > > 19:26:47 - Connecting to mta2.grp.scd.yahoo.com > > 19:41:57 - Disconnected from mail server - mta2.grp.scd.yahoo.com > > 19:41:57 - Connecting to mta3.grp.scd.yahoo.com > > 19:57:06 - Disconnected from mail server - mta3.grp.scd.yahoo.com > > The line that starts with "Connecting to" is written to the log as the > connect method is called. The line that starts with "Disconnected from mail > server" is written when the OnSessionClosed event handler is fired. So you > can see, particularly from the last two lines, it took 16min 9sec to fire > the event handler. > > Now, this is NOT a TWSocket problem. You can reproduce the problem from the > DOS command line with "telnet mta3.grp.scd.yahoo.com 25". However, it is > important to find a solution to this problem as the relay engine is > effectively being held up by this strange behaviour. What should be said is > that the fact that the relay engine is even going to mta3.grp.scd.yahoo.com > as a result of spam, so it's possible that the spammer has found this > interesting behaviour, and is exploiting it. > > Any suggestions on how I can prevent this behaviour from holding up my > system in the future ?? > > Cheers > > Erich > > > -- > To unsubscribe or change your settings for TWSocket mailing list > please goto http://www.elists.org/mailman/listinfo/twsocket > Visit our website at http://www.overbyte.be -- To unsubscribe or change your settings for TWSocket mailing list please goto http://www.elists.org/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
