Hello, i Added quota for 1000MB for every mailbox, but i sent message with file (20mb) and and still looks bugged, and it doesn't work? ;
Mailquota is ahndled by dovecot / courier, its not a system quota. The used space statistic is not updated in realtime as it would use too much resources, so you might have to wait a bit. And check that mail statistics is activated under system > server config > mail