I do manage the mail server.  I don't think I set limits for connections per timeframe, but then again, I'm not as familiar with all the commands on Exchange 2010.  It seems to me that the listserv is sending about 200 messages to the Exchange server, and once it has delays for 200 messages, it slows down the handoff between the listserv and exchange at the rate in which the delays are removed.  So if I can find a way to increase those numbers, maybe that'll fix it.

Does that sound right?

Here's the listserv log for today:

06 Feb 2013 00:00:02 Send error: Unknown error [10053]
06 Feb 2013 00:32:46 Send error: Unknown error [10053]
06 Feb 2013 03:28:22 Send error: Unknown error [10053]
06 Feb 2013 03:41:47 Send error: Unknown error [10053]
06 Feb 2013 07:10:19 Send error: Unknown error [10053]
06 Feb 2013 07:21:06 Send error: Unknown error [10053]
06 Feb 2013 07:42:33 Send error: Unknown error [10053]
06 Feb 2013 08:27:00 Send error: Unknown error [10053]
06 Feb 2013 08:35:34 Send error: Unknown error [10053]
06 Feb 2013 08:58:25 Send error: Unknown error [10053]
06 Feb 2013 09:10:55 Send error: Unknown error [10053]
06 Feb 2013 09:41:05 Send error: Unknown error [10053]
06 Feb 2013 10:11:10 Send error: Unknown error [10053]
06 Feb 2013 10:44:06 Send error: Unknown error [10053]
06 Feb 2013 10:54:40 -> RSET
06 Feb 2013 10:54:40 421 4.4.1 Connection timed out
06 Feb 2013 11:05:07 -> RSET
06 Feb 2013 11:05:07 421 4.4.1 Connection timed out
06 Feb 2013 11:15:11 -> RSET
06 Feb 2013 11:15:11 421 4.4.1 Connection timed out
06 Feb 2013 11:25:23 -> RSET
06 Feb 2013 11:25:23 421 4.4.1 Connection timed out
06 Feb 2013 11:35:39 -> RSET
06 Feb 2013 11:35:39 421 4.4.1 Connection timed out
06 Feb 2013 11:46:05 -> RSET
06 Feb 2013 11:46:05 421 4.4.1 Connection timed out
06 Feb 2013 11:56:30 -> RSET
06 Feb 2013 11:56:30 421 4.4.1 Connection timed out
06 Feb 2013 12:06:42 -> RSET
06 Feb 2013 12:06:42 421 4.4.1 Connection timed out
06 Feb 2013 12:16:48 -> RSET
06 Feb 2013 12:16:48 421 4.4.1 Connection timed out
06 Feb 2013 12:26:49 -> RSET
06 Feb 2013 12:26:49 421 4.4.1 Connection timed out
06 Feb 2013 12:36:50 -> RSET
06 Feb 2013 12:36:50 421 4.4.1 Connection timed out
06 Feb 2013 12:46:52 -> RSET
06 Feb 2013 12:46:52 421 4.4.1 Connection timed out
06 Feb 2013 12:56:54 -> RSET
06 Feb 2013 12:56:54 421 4.4.1 Connection timed out
06 Feb 2013 13:06:59 -> RSET
06 Feb 2013 13:06:59 421 4.4.1 Connection timed out
06 Feb 2013 13:17:00 -> RSET
06 Feb 2013 13:17:00 421 4.4.1 Connection timed out
06 Feb 2013 13:27:01 -> RSET
06 Feb 2013 13:27:01 421 4.4.1 Connection timed out
06 Feb 2013 13:37:01 -> .
06 Feb 2013 13:37:01 421 4.4.1 Connection timed out
06 Feb 2013 13:47:05 -> RSET
06 Feb 2013 13:47:05 421 4.4.1 Connection timed out
06 Feb 2013 13:57:07 -> RSET
06 Feb 2013 13:57:07 421 4.4.1 Connection timed out
06 Feb 2013 14:07:09 -> RSET
06 Feb 2013 14:07:09 421 4.4.1 Connection timed out
06 Feb 2013 14:17:13 -> RSET
06 Feb 2013 14:17:13 421 4.4.1 Connection timed out
06 Feb 2013 14:27:14 -> RSET
06 Feb 2013 14:27:14 421 4.4.1 Connection timed out
06 Feb 2013 14:48:20 Send error: Unknown error [10053]
06 Feb 2013 14:58:27 -> RSET
06 Feb 2013 14:58:27 421 4.4.1 Connection timed out
06 Feb 2013 15:08:39 -> RSET
06 Feb 2013 15:08:39 421 4.4.1 Connection timed out
06 Feb 2013 15:18:40 -> RSET
06 Feb 2013 15:18:40 421 4.4.1 Connection timed out
06 Feb 2013 15:29:11 -> RSET
06 Feb 2013 15:29:11 421 4.4.1 Connection timed out
06 Feb 2013 15:39:35 -> RSET
06 Feb 2013 15:39:35 421 4.4.1 Connection timed out
06 Feb 2013 15:49:43 -> RSET
06 Feb 2013 15:49:43 421 4.4.1 Connection timed out
06 Feb 2013 16:00:04 -> RSET
06 Feb 2013 16:00:04 421 4.4.1 Connection timed out
06 Feb 2013 16:10:30 -> RSET
06 Feb 2013 16:10:30 421 4.4.1 Connection timed out
06 Feb 2013 16:20:41 -> RSET
06 Feb 2013 16:20:41 421 4.4.1 Connection timed out
06 Feb 2013 16:30:42 -> RSET
06 Feb 2013 16:30:42 421 4.4.1 Connection timed out
06 Feb 2013 16:40:48 -> RSET
06 Feb 2013 16:40:48 421 4.4.1 Connection timed out
06 Feb 2013 16:51:14 -> RSET
06 Feb 2013 16:51:14 421 4.4.1 Connection timed out
06 Feb 2013 17:01:15 -> RSET
06 Feb 2013 17:01:15 421 4.4.1 Connection timed out
06 Feb 2013 17:11:16 -> RSET
06 Feb 2013 17:11:16 421 4.4.1 Connection timed out
06 Feb 2013 17:21:17 -> RSET
06 Feb 2013 17:21:17 421 4.4.1 Connection timed out
06 Feb 2013 17:31:20 -> RSET
06 Feb 2013 17:31:20 421 4.4.1 Connection timed out
06 Feb 2013 17:41:23 -> RSET
06 Feb 2013 17:41:23 421 4.4.1 Connection timed out
06 Feb 2013 17:51:24 -> RSET
06 Feb 2013 17:51:24 421 4.4.1 Connection timed out
06 Feb 2013 18:01:25 -> RSET
06 Feb 2013 18:01:25 421 4.4.1 Connection timed out
06 Feb 2013 18:53:57 Send error: Unknown error [10053]
06 Feb 2013 19:04:01 -> RSET
06 Feb 2013 19:04:01 421 4.4.1 Connection timed out
06 Feb 2013 19:14:04 -> RSET
06 Feb 2013 19:14:04 421 4.4.1 Connection timed out
06 Feb 2013 19:19:56 -> RSET
06 Feb 2013 19:19:56 451 4.7.0 Timeout waiting for client input
06 Feb 2013 19:34:11 Send error: Unknown error [10053]
06 Feb 2013 19:41:31 -> RSET
06 Feb 2013 19:41:31 451 4.7.0 Timeout waiting for client input
06 Feb 2013 19:54:47 Send error: Unknown error [10053]
06 Feb 2013 20:21:51 Send error: Unknown error [10053]
06 Feb 2013 20:45:44 Send error: Unknown error [10053]
06 Feb 2013 21:00:00 Send error: Unknown error [10053]
06 Feb 2013 21:24:55 Send error: Unknown error [10053]
06 Feb 2013 23:00:00 Send error: Unknown error [10053]
________________________________________
From: LISTSERV site administrators' forum [[log in to unmask]] on behalf of [log in to unmask] [[log in to unmask]]
Sent: Thursday, February 07, 2013 1:08 PM
To: [log in to unmask]
Subject: Re: Strange Delivery Delays

John wrote on 02/07/2013 01:01:06 PM:

> As of now, about an hour later, there are still 2,317 files in
> there.  So apparently if these are files waiting to be queued and
> sent out, there must be something going on between the listserv and
> the transfer to the mail server?

Most likely. Do you manage the mail server?  Any limits imposed on it for
the number of connections per timeframe?  That could also be imposed if
there is a firewall or other network device in front of the mail server
too.

"No one would ever connect to the mail server more that 200 times per
hour!"




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