Author: Nico Erfurth Date: To: Hubert Denkmair, exim-users CC: Subject: Re: [exim] MySQL table lookup..
Hubert Denkmair wrote: > You could try to use a LIKE in your SQL query:
> SELECT '$sender_host_address' FROM global_backlist WHERE
> '$sender_host_address' LIKE CONCAT(address,'%')
This would result in a full table scan, every time the lookup is done.