Thiago Henrique wrote:
I'm testing Dovecot 2.0.

I plan to use Dovecot 2.0 with thousands of domains per server. My user base is 
under virtual MySQL.

Is there a way to make the LMTP not make query to MySQL for each message 
delivered ? I'm afraid that the MySQL server does not support the load.

A "SELECT" query retrieving a single record on a MySQL database should be a cheap operation.

How long are your queries taking?

Your common queries should work principally by index scans.

Your indexes should be entirely in RAM.

So queries which retrieve a single row from a table should run in O(log N) time, which in my experience is usually measured in milliseconds.

Bill

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