In SpamFilter all incoming and outgoing connections are multi-threaded. This means that each email that is received or that is sent is handled by a separate thread. The number in parenthesis (xxx) indicates what the thread with that ThreadID is currently doing.
All log entries are timestamped for when the event took place, and indicate the ID of the thread doing the work at that moment. When an incoming connection is detected, a new thread is spawned to process the incoming connection requests. Once the email msg is received from the remote server, the file is ASCII-queued to a temp file in the queue directory, along with a separate file containing the recipients for the email. At this point the thread terminates and a new thread is spawned that takes care of delivering the email to your destination mail server.
A complete email reception/fwding process would look similar to the following:
02/28/03 00:53:25:449 -- (2212) Connection from: 192.168.1.101 - Originating country : N/A 02/28/03 00:53:25:630 -- (2212) Resolving 192.168.1.101 - Not found 02/28/03 00:53:25:630 -- (2212) Mail from: roberto3@netwide.net 02/28/03 00:53:25:930 -- (2212) MAPS search done... . 02/28/03 00:53:25:930 -- (2212) RCPT TO: roberto2@netwide2.net accepted 02/28/03 00:53:25:990 -- (2212) EMail from roberto3@netwide.net to roberto2@netwide2.net was queued. 02/28/03 00:53:25:990 -- (2212) Disconnect 02/28/03 00:53:26:000 -- (2280) Sending email from roberto3@netwide.net to roberto2@netwide2.net 02/28/03 00:53:27:693 -- (2280) EMail from roberto3@netwide.net to roberto2@netwide2.net was forwarded to mail.netwide.net
Ini the log you should always find the reason of why an email was rejected or quarantined. Look for the line that says "will be quarantined" or "will be disconnected". The line just above that will indicate the last test that failed (Note that you may have to skip a few lines if other emails were received at the same time, that is where looking at the Thread ID becomes handy). Following are some reject samples from our logs:
03/25/03 00:00:56:110 -- (313) - MAPS search done... 521 The IP 209.111.69.236 is Blacklisted by dnsbl.njabl.org. . 03/25/03 00:00:56:110 -- (313) 209.111.69.236 - Mail from: jgalaoit754@click2saveonline.us To: rcox@netwide.net will be quarantined
or
03/25/03 00:01:04:872 -- (73) Resolving 220.71.31.35 - Not found 03/25/03 00:01:04:872 -- (73) - Reverse DNS not found - 03/25/03 00:01:04:872 -- (73) 220.71.31.35 - Mail from: cvfgb66b65t@aaro.se To: ashbrook@netwide.net will be quarantined
or
03/25/03 00:05:29:423 -- (264) RCPT TO: ohfudge@NETWIDE.NET accepted 03/25/03 00:05:29:573 -- (264) Found Keywords: [mortgage,click here] 03/25/03 00:05:29:573 -- (264) EMail from atlasrewards@FUNMAILOFFERS.COM to ohfudge@NETWIDE.NET matches content filter rules - rejected. 03/25/03 00:05:29:633 -- (264) EMail from atlasrewards@FUNMAILOFFERS.COM to ohfudge@NETWIDE.NET was received and quarantined. Size: 5 KB
Hope this helps!
Roberto Franceschetti LogSat Software
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