[Dovecot] quota dict with mysql 4.0

[Andre Hübner]

Hello,

i use successfully mysql-quotasystem with dovecot 1.2.11 on different 
servers except for mysql 4.0 servers
dovecot internally uses sql: "ON DUPLICATE KEY UPDATE" which was introduced 
in mysql 4.1
Is there a chance to make this statement mysql 4.0 compatible or should i 
update mysql? i want to avoid updating mysql because some old software is 
running which is not compatible to higher mysql versions.

Thanks,
Andre