Question : Postfix Quota

I'm getting the following error on email:

maildir delivery failed: Sorry, this user has overdrawn
    their diskspace quota. Please try again later.

It was so long ago that I set up postfix that I don't know where to start in trying to solve this.

Please help.

Answer : Postfix Quota

connect to your mysql database and try to check the quota settings over there

view : SELECT * FROM mailbox ;

to set new quota : UPDATE mailbox set quota='new_quota_value' where username='your_username' ;

Set quota value to 0 to disable quota on a specific username.

Cheers,
Stef

P.S. : waiting for news.