Postfix/mysql - too many connections

[Robert Hensel <robert@hensel.nl>]

Hello,

Recently I started noticing some database connection problems. I soon 
discovered that postfix was the problem(I have a postfix-mysql setup). I 
have max_connections set at 100, and postfix seems to want more at some 
times. However, i'm a little confused, because i don't have an large 
amount of mail running through it. I see a lot of forbidden relays from 
one particular domain, like 30 relays_denied per minute now and then, 
and the "mysql-problems" seem to correspond with this. But i've seem 
much more mail coming through and never seen this.

Any thoughts?

Greetings,
Robert