mbufs exhausted

[Jon Reynolds]

I am getting the message "mbufs exhausted please see tuning". So, I saw
tuning. What file can you change the mbufs in? I remeber it being in
/etc but not which config file it was.

Also, would adding 'NMBCLUSTERS=4096' to the end of my kernel be ok?
Whats the highest value I can set this too? I found inside of 'LINT'
that mbufs would size itself 4x that of 'NMBCLUSTERS' if the NMBUFS
option is not specified. So would this help the errors that I am
getting? 

FreeBSD 4.7
128M RAM
733 PIII
150 users
2 instances of qmail-1.03
apache
courier-IMAP
SquirrelMail
VMailMgr
Vexira Anti-Virus

Any help will be *GREATLY* appreciated,

-- 
Jon Reynolds <jonr at destar.net>