[Mailman-Users] Wondering how long to send messages

Mike mike at dehart.net
Sat Aug 28 18:18:17 CEST 2004

Thanks, all for the excellent dialog on this. Couple follow-up questions
from the uninitiated...

-is there general agreement that if I'm not VERPing or single treading, then
once the Mailman smtp log shows "complete" that I'm good to go to change the

-the path to the Mailman smtp log?

-I've got a default Plesk install of Mailman. I.e. I haven't looked below
the hood beyond the Mailman web interface. Can I assume I'm not VERPing nor
single threading?

(i see that i can prob look here:)

VERP settings within Mailman are done on a per-installation basis - ie they
affect all the lists within the installation. To configure VERP within
Mailman read the information in ~mailman/Mailman/Default.py for the options
that start with VERP. In a nutshell, all you need to do to enable VERP with
Exim is to add these lines to ~mailman/Mailman/mm_cfg.py:




-----Original Message-----
From: Brad Knowles [mailto:brad at stop.mail-abuse.org]
Sent: Saturday, August 28, 2004 10:10 AM
To: Mark Sapiro
Cc: Brad Knowles; mike at dehart.net; mailman-users at python.org
Subject: Re: [Mailman-Users] Wondering how long to send messages

At 6:40 PM -0700 2004-08-27, Mark Sapiro wrote:

>  But wouldn't those stragglers be queued in the MTA? The question is at
>  what point can one delete someone from the membership list without
>  causing a prior post to that person to not be sent?

	A lot depends on how the mailing list is configured, how the MTA
is configured, etc....  If you're VERPing the recipients, it could
take a while to work through them all for a big list.  If you're not
VERPing the recipients, you could have the group at the bottom of the
list held up while the mailing list tries to deliver stuff to
recipients higher on the list but for which there are DNS problems
causing the MTA to be slow to accept them.

	The answer remains "it depends".

>  I'm not sure, but it seems to me that once the "completed" entry is
>  written to the Mailman smtp log, changes to the membership list won't
>  affect the message recipients of that post.

	Can you be sure which "completed" entry corresponds to which
post, and which other messages might be in the process of being

	That is, unless you want to single-thread all delivery to the
list, so that you don't post a new message until you can be sure that
the previous post has at least had all copies of the outgoing message
accepted by the local MTA, even if those messages have not yet been
delivered to their recipients.

Brad Knowles, <brad at stop.mail-abuse.org>

"Those who would give up essential Liberty, to purchase a little
temporary Safety, deserve neither Liberty nor Safety."

     -- Benjamin Franklin (1706-1790), reply of the Pennsylvania
     Assembly to the Governor, November 11, 1755

   SAGE member since 1995.  See <http://www.sage.org/> for more info.

More information about the Mailman-Users mailing list