question about bulkmailings

I'm using majordomo with sendmail V8.11.6p2.  Bless its little tidy, 
thrifty soul, sendmail packages up all addresses:
1) in the mailing list
AND
2) in a common domain
into a single envelope.  This means that, when we send out a big mailing 
to prospective freshpeople, there will be some hundreds in an envelope 
to aol.com and similar situations with yahoo and hotmail.

As we all know by now, This Is Not Good, though, thankfully, these big 
ISPs haven't yet lowered the boom on us.  What I need to do is to break 
up all the mailings going to a common domain into multiple envelopes 
with N messages in each.

We're running IBM's AIX which is always rather back level (but very 
stable) on the Open Source stuff, consequently defining 
SMTP_MAILER_MAXRCPTS isn't available, as it requires V8.12 or higher.

I then though of the here oft-mentioned bulk_mailer, but a reading of 
its README yielded this:
> The combination of bulk_mailer and sendmail provides a 
> compromise between the two extremes - it splits the message up into 
> several parallel delivery jobs, but all recipients at a single host
> get placed in the same delivery job, so sendmail can still optimize
> this case.

So that doesn't help, either.

In the animated film Chicken Run, there's this really moronic chicken 
that knits and says stupid things... Ginger (the gutsy chicken) says, 
"We can die trying or die in this farm," and then the other chicken 
says, "Are those our only two choices?"

Are those our only two choices?

Yes, I know I could compile sendmail at the latest level, but then I'd 
own it.

?

-- 
====
Stewart Dean, Unix System Admin, Henderson Computer Resources
Center of Bard College, Annandale-on-Hudson, New York  12504
[email protected]  voice: 845-758-7475, fax: 845-758-7035