i am using smartermail 4.1 with plesk 8.1.0 there is one feature in plesk domain > mail > preference > Catchall Bounce forward discard bounce works fine with smartermail forward as well too. BUT discard is what doing is it creates aan email user in smartermail with name : trash123..@domain.tld and build one alias under domain with catchall123.. > trash123..@domain.tld which then dump all non existence incoming emails to trash123..@domain.tld instead of making it empty. what that does refelct is that if domain has so many email all spam to nonexisting emails to trash account which is no where shown in plesk but the disc quota count get failed as if you see full report under plesk and see mail section it will show total disk used by mail is : 235.xx mb and individual mail user e.g. info : 12mb sales : 35mb support : 17mb then if you count all existing email id space it is less than the actual count shown in plesk mail full stat. i think this is bug and should resolve immidiately. i also tried to revert setting of nonexist email from discard to bounce but that trash email didnt get removed from smartermail and it is always counting as domains disk space usage. if plesk dont give information to domain admin where they are using 253mb acutal then i think this is bug and should resolve immidiately. or else plesk should show that trash account in cp itself so that domain owner/admin can check and resolve manually.