[Q] is there options for distinct upper or lower case letter in mail account?

[배성식]

Hi~

I have just installed qmail + mysql in my RedHat 6.0 system and It work well.

But there is a little problem.. 

"qmail + mysql" dosen't distinct upper or lower case letter.

I want to distinct.

Is there any option to do that in qmail?

if not, how can I realize it?


Thank you.