Another email returns from [EMAIL PROTECTED], the size is 104K.
Well, that is normal behavior, you can complain it about yahoo.
Their mail server returns mails fully because remonte server does not accept it.
Without chkusr qmail receives mail. scans and truncates it.
Toaster chusr+simcan rejects mail at smtp level, and then sending server can do what it wants to do with mail, but it does not bounce back full message.
I think there is double bounce delete patch to qmail:
http://qmail.org/doublebounce-trim.patch -- Eero