I got this one earlier this month. Thought it was cute.
>binmail: /usr/spool/mail/userid: too big to accept new messages.
> It's size is 205735 bytes which is 935 bytes over quota.
>mail: cannot open dead.letter
>554 <userid@host>... unknown mailer error 1
This is so wonderfully un*x....:))))
So I'm going to assume that 'unknown mailer error 1' means the user's
mailbox is full from now on...:)
Nathan