>Well, generally I had no problem with what Chad suggested (check for
>matching lowercase, then check for matching exact-case). But imagine a
>mail system processing mails for a very high number of users. Checking for
>both lowercase *and* exact case would double the effort - what most likely
>would be absolutely unnecessary since probably >90% of mail addresses in
>the known universe are lowercase.
no. because you check the lowercase first and if it matches you don't check
exact. You would have very little overhead in most cases
Gruesse
Chad
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