Thank you for your replies.

My ListServ is already configured to have 10 concurrent SMTP handlers. I
assume this should be sufficient to send such a large number of
messages.

Anyhow, I expect that the the slowest step will be in the actual
delivery of all those messages by my MTA. Delivering the messages to the
MTA message queue should be very swift.

So I think I will just go for it.

All I wonder is what advantage the Listserv HPO version has over the
classic version.

Regards,

Lucas

Marshall, Clinton C schreef op 11-09-2018 1:59:

> Hello,
>
> There are a number of variables here, # of users in the List, # of smtp handlers etc, network links etc.
>
> Subscribers  in a List are processed sequentially perhaps the List can be broken down into smaller Lists - say 5 Lists alphabetically, and then fired off one after the other, a bit of co-ordination but easier to manage/monitor,
>
> FROM: LISTSERV Site Administrators' Forum [mailto:[log in to unmask]] ON BEHALF OF Kaminsky,Matthew
> SENT: Tuesday, 11 September 2018 1:08 AM
> TO: [log in to unmask]
> SUBJECT: Re: Large number of list members
>
> Nope, we're on a classic license and using it ourselves. Here's what's running:
>
> 10782 ?        00:01:08 lsv
>
> 10783 ?        00:00:00 lsv
>
> 10784 ?        00:00:00 lsv
>
> 10785 ?        00:00:00 lsv
>
> 10782 is the main process while 83, 84, and 85 are the SMTP handlers as defined in SMTP_FORWARD_n. With our Fall term about to start we have a high volume of mail to lists including university wide ones, so having it handed off to the three handlers is a lifesaver.
>
> FROM: LISTSERV Site Administrators' Forum <[log in to unmask]> ON BEHALF OF Tad Nishina
> SENT: Monday, September 10, 2018 10:29 AM
> TO: [log in to unmask]
> SUBJECT: Re: Large number of list members
>
> Isn't SMTP_Forward_N HPO only?  I might be wrong, but I thought it wasn't available to Classic.
>
> FROM: LISTSERV Site Administrators' Forum <[log in to unmask]> on behalf of "Kaminsky,Matthew" <[log in to unmask]>
> REPLY-TO: LISTSERV Site Administrators' Forum <[log in to unmask]>
> DATE: Friday, September 7, 2018 at 11:05 AM
> TO: "[log in to unmask]" <[log in to unmask]>
> SUBJECT: Re: Large number of list members
>
> Depending on how many connections your SMTP server will accept from another machine, use SMTP_FORWARD_n to set up several background processes that will handle the actual sending. For instance if your SMTP_FORWARD is set to smtp.example.com then you could spawn three workers by setting SMTP_FORWARD_n to smtp.example.com*3. This allows several connections to handle each batch of addresses and the additional benefit of letting the main listserv process be available instead of locked up trying to send all the mail by itself.

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