Re: Macro to send messages with BCC to separate queue group?

HRileyBSG@xxxxxxxxx wrote:

On Mar 20, 3:52 am, Andrzej Adam Filip <a...@xxxxxxx> wrote:
Typically most messages are delivered during initial "at once" delivery
attempt. Typically sendmail delivers 95%+ messages to non grey-listing
destinations "at once".

I understand that. However, we had to switch to a queue-only method
due to the nature of our situation. Our clients send large number of
emails out and those emails are typically BCC'd to the domain of the
original sender. The time it takes those emails to be delivered
doesn't matter that much (hours later is fine). However, our clients
also send out test messages which need to be delivered within a few
minutes. The big problem we come across is that we very easily hit the
limit on the recipient server for connections per minute with those
BCC'd messages, so the test messages get deferred along with the
others. What I want is for sendmail to treat those test messages
differently. We have tagged those emails with Precedence headers to
move things in the direction we want, but it doesn't seem to be
enough.

What you "investigate" should be a "non issue" unless you face:
* very heavy outgoing email load
* not rare enough "periods of delivery problems"
* you MUST guarantee fast delivery after "periods of delivery problems"

3 for 3.

I am under impression that you have chosen "sub optimal" path to fix
your "problem"

Wouldn't surprise me.
.
Do you have some problems with "at once" deliveries?

Yep. See above.

What is typical size of your sendmail queue?

On busy days at peak times, it can be 10-20 thousand. And we're only
expecting it to grow further.

I would suggest you using separate queue groups for top 20-100
destinations and multiple queue directories in default queue.

Start with:
* creating queue groups for top 5 destinations/clients
* increasing number of directories in default queue
[ initially 4 if you do not use them ]

http://www.sendmail.org/m4/features.html#queuegroup

I would bet that fine tuning number of queue directories in default
queue and creating per top destinations would reduce 80%+ of your
problem - follow "standard path" *first*.

--
[pl>en: Andrew] Andrzej Adam Filip : anfi@xxxxxxxxxxxx : anfi@xxxxxxxx
Open-Sendmail: http://open-sendmail.sourceforge.net/
An optimist is a guy that has never had much experience.
-- Don Marquis
.

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