Postfix + MySQL engine type

3 msg	Postfix + cyrus imapd data format error. Comman...
18 msg	Inverse access restrictions?
9 msg	forward only certain user's email to google app...

Postfix + MySQL engine type
\ Justin Kim (10 Apr 2007)
. \ Magnus Bäck (11 Apr 2007)
. \ mouss (11 Apr 2007)
. \ mouss (11 Apr 2007)

21 msg	smtpd_restriction_classes and local delivery
7 msg	transport_maps and auto reply daemon
8 msg	_sasl_plugin_load failed on sasl_auxprop_plug_init
6 msg	SMTP AUTH via LDAP
3 msg	Out: 451 Error: queue file write error
5 msg	FW: Postfix Looping Issue
9 msg	request for help - setting up postfix
6 msg	SecuritySage Guides - New Location
2 msg	Adress extension propagation with virtual alias...
10 msg	Not adding Received hdr for auth'ed users
3 msg	SPamd ?
2 msg	OT: google trends - postfix/sendmail/qmail/exim
1 msg	RE: Cached MX?
3 msg	Something wrong with my servers ?
9 msg	Outgoing Mail Scanning
10 msg	Certificate recommendation?

Subject:	Postfix + MySQL engine type
Group:	Postfix-users
From:	Justin Kim
Date:	10 Apr 2007

Hi all,
I have a question that might be more related to MySQL.
However, it is related to postfix using MySQL as a databse backend.
I setup Postfix+Dovecot+MySQL+Postfixadmin on redhat box.
And following postfixadmin guide to create database stucture, it is by
default to create a tables using MyISAM engine.
But I was told that InnoDB engine is better to use.
I am not sure what is the best for my case.
We are seeing about 500,000 messages per day and 80,000 users constanly
logging in to pop their messages.
Is there any guide for high volume postfix performance tuning?
I would love to get advices on tuning postfix server to the ISP level mail
server.
Please help!
Justin