Hmm, I'll have a look at it, though I'm not sure how to determine the cause.
Here's a segment from the Listserve queue just to look at, but if it's taking the mail server that long to queue each message, then it boils down to simple math, I suppose.
11 Feb 2013 13:35:49 >DATA
11 Feb 2013 13:35:49 <354 Start mail input; end with <CRLF>.<CRLF>
11 Feb 2013 13:35:51 <250 2.6.0 <[log in to unmask]> [InternalId=6290438] Queued mail for delivery
11 Feb 2013 13:35:51 >RSET
11 Feb 2013 13:35:51 <250 2.0.0 Resetting
11 Feb 2013 13:35:51 >MAIL FROM:<owner-page-legislative-news*Lee*-Stanley**DOUGLAS*-K12*-GA*[log in to unmask]>
11 Feb 2013 13:35:51 <250 2.1.0 Sender OK
11 Feb 2013 13:35:51 >RCPT TO:<[log in to unmask]>
11 Feb 2013 13:35:51 <250 2.1.5 Recipient OK
11 Feb 2013 13:35:51 >DATA
11 Feb 2013 13:35:51 <354 Start mail input; end with <CRLF>.<CRLF>
11 Feb 2013 13:35:52 <250 2.6.0 <[log in to unmask]> [InternalId=6290439] Queued mail for delivery
11 Feb 2013 13:35:52 >RSET
11 Feb 2013 13:35:52 <250 2.0.0 Resetting
11 Feb 2013 13:35:52 >MAIL FROM:<owner-page-legislative-news*wpitts**OCONEESCHOOLS*[log in to unmask]>
11 Feb 2013 13:35:52 <250 2.1.0 Sender OK
11 Feb 2013 13:35:52 >RCPT TO:<[log in to unmask]>
11 Feb 2013 13:35:52 <250 2.1.5 Recipient OK
11 Feb 2013 13:35:52 >DATA
11 Feb 2013 13:35:52 <354 Start mail input; end with <CRLF>.<CRLF>
11 Feb 2013 13:35:53 <250 2.6.0 <[log in to unmask]> [InternalId=6290440] Queued mail for delivery
11 Feb 2013 13:35:53 >RSET
11 Feb 2013 13:35:53 <250 2.0.0 Resetting
11 Feb 2013 13:35:53 >MAIL FROM:<owner-page-legislative-news*Andrea_Witt**GWINNETT*-K12*-GA*[log in to unmask]>
11 Feb 2013 13:35:53 <250 2.1.0 Sender OK
11 Feb 2013 13:35:53 >RCPT TO:<[log in to unmask]>
11 Feb 2013 13:35:53 <250 2.1.5 Recipient OK
11 Feb 2013 13:35:53 >DATA
11 Feb 2013 13:35:53 <354 Start mail input; end with <CRLF>.<CRLF>
11 Feb 2013 13:35:54 <250 2.6.0 <[log in to unmask]> [InternalId=6290441] Queued mail for delivery
11 Feb 2013 13:35:54 >RSET
11 Feb 2013 13:35:54 <250 2.0.0 Resetting
11 Feb 2013 13:35:54 >MAIL FROM:<owner-page-legislative-news*valerie*-mathura**COWETASCHOOLS*[log in to unmask]>
11 Feb 2013 13:35:54 <250 2.1.0 Sender OK
11 Feb 2013 13:35:54 >RCPT TO:<[log in to unmask]>
11 Feb 2013 13:35:54 <250 2.1.5 Recipient OK
11 Feb 2013 13:35:54 >DATA
11 Feb 2013 13:35:54 <354 Start mail input; end with <CRLF>.<CRLF>
11 Feb 2013 13:35:54 <250 2.6.0 <[log in to unmask]> [InternalId=6290442] Queued mail for delivery
11 Feb 2013 13:35:54 >RSET
11 Feb 2013 13:35:54 <250 2.0.0 Resetting
11 Feb 2013 13:35:54 >MAIL FROM:<owner-page-legislative-news*julie*-lane*-hutto**GMAIL*[log in to unmask]>
11 Feb 2013 13:35:54 <250 2.1.0 Sender OK
11 Feb 2013 13:35:54 >RCPT TO:<[log in to unmask]>
11 Feb 2013 13:35:54 <250 2.1.5 Recipient OK
11 Feb 2013 13:35:54 >DATA
11 Feb 2013 13:35:54 <354 Start mail input; end with <CRLF>.<CRLF>
11 Feb 2013 13:35:55 <250 2.6.0 <[log in to unmask]> [InternalId=6290443] Queued mail for delivery
11 Feb 2013 13:35:55 >RSET
11 Feb 2013 13:35:55 <250 2.0.0 Resetting
11 Feb 2013 13:35:55 >MAIL FROM:<owner-page-legislative-news*navytide**AOL*[log in to unmask]>
11 Feb 2013 13:35:55 <250 2.1.0 Sender OK
11 Feb 2013 13:35:55 >RCPT TO:<[log in to unmask]>
11 Feb 2013 13:35:55 <250 2.1.5 Recipient OK
11 Feb 2013 13:35:55 >DATA
-----Original Message-----
From: LISTSERV site administrators' forum [mailto:[log in to unmask]] On Behalf Of Liam Kelly
Sent: Monday, February 11, 2013 3:17 PM
To: [log in to unmask]
Subject: Re: Strange Delivery Delays
> OK, so we sent out a mailing today at 11:30, and as of 11:58, there
> are still over 3100 .mail files in the folder. Here's the current log.
> It's pretty long, due to begin in verbose mode, I suppose.
Your SMTP server is taking forever to queue those messages. For example, even before your mailing at 11:30, it's taking a full three seconds to queue a message:
> 11 Feb 2013 07:21:36 <354 Start mail input; end with <CRLF>.<CRLF>
> 11 Feb 2013 07:21:39 <250 2.6.0
> <[log in to unmask]>
> [InternalId=6285930] Queued mail for delivery
It looks like that gets even worse once things get busy:
> 11 Feb 2013 11:32:11 <354 Start mail input; end with <CRLF>.<CRLF>
> 11 Feb 2013 11:32:23 <250 2.6.0
> <[log in to unmask]>
> [InternalId=6287430] Queued mail for delivery
Twelve seconds to queue that one. If you look through the logs, you'll see lots of similar queuing times. If you can only get one message out every 5-10 seconds, you can do the math as to how long it's going to take your LISTSERV queue to empty.
As to why your SMTP server is taking so long, you'll need to run it down from that end. Some of the usual causes are things like inefficient anti-virus and/or spam scanning of every message (my first guess), a disk I/O bottleneck on the mail spool disk, inbound mail throttling, or inefficient directory lookups for addresses to route locally. Whatever the case may be, you aren't going to be able to figure it out by looking only at LISTSERV's end of things. You need to go to the mail server.
--
Liam Kelly
Senior Consulting Analyst
L-Soft international
[log in to unmask]
L-Soft wishes you a Happy 2013
http://www.lsoft.com/happy2013.html
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