First, the List Server settings might be optimized by increasing the 'Number
or Recipients per message to something like 1700 instead of the default 25.
This will reduce the number of messages in the Queue from over 1300 to less
than 30 (for each message sent to list), the default MaxQueProce (yours is
NOT set to the default or you would only see 30 SMTP32 processes, not 130!).
This will leave some SMTP32 processes to help the normal incoming/outgoing
email.

Second, Check KB for 'MaxQueProc' and find that registry setting and reduce
it. I've seen someone else who set it to 100 and that caused resource
problems. I've used 60 on my similar (but single CPU) PC and multiple lists
and all worked well.

Third, IMail uses a Q and a D file for the messages in the \spool. Having
only one and not the other is not enough to tell IMail to process the
message. See Manual for more details.

Fourth, I heard of lists over 65K users.

Daniel Donnelly
________________________________________________________
See the Knowledge Base at http://support.ipswitch.com/kb

----- Original Message -----
From: "Newsletter" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Sunday, October 15, 2000 10:31 AM
Subject: [IMail Forum] Mailinglist max recipients


> Hello List,
>
> Our Imail is running on a Dual Proc, 512MB RAM, SCSI Drives. This machine
is just running Imail.
> There are only several hundred accounts (Long story, but there used to be
5000+ accounts, that's why
> it's on such a fast machine).
>
> We have a mailing list with about 34,000 addresses in the list. We sent
our first message to this
> list and it didn't go very well. The system resouces never went higher
than 5%. There were up to 130
> SMTP processes for the messages at any point. The installation was done by
someone else, I think it
> was installed with defaults. What settings in Imail or in the Registry can
i change to hopefully
> improve things?
>
> During the time the messages were being delivered incoming mail wasn't
being delivered to accounts
> in Imail. Or so far down in the queue that it seemed like it stopped.
Would we have a chance of
> losing any incoming or outgoing mail during this mail blast?
>
> After 5 or so hours there were about 7200 messages still in the Q and it
seemed to have stopped. I
> started pulling anything in the Q ending in .LST then it started again.
when i copied the messages
> back into te Q it ddidn't seem to know they were in there. I even copied
some regular messages back
> in there that were copied out and it didn't notice those either. At this
point any mail outgoing or
> incoming seem to work just fine. The number of the messages in the Q was
"0" even though there was
> messages in the spool folder. Any insight would be appreciated.
>
> How many members can a list on a machine like this handle?
>
> Thanks for the help,
> -steve funk
>
> Please visit http://www.ipswitch.com/support/mailing-lists.html
> to be removed from this list.
>
> An Archive of this list is available at:
> http://www.mail-archive.com/imail_forum%40list.ipswitch.com/
>

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