info@status.net is bouncing

I attempted to mail info@status.net -- the address given on the status.net home page -- and got this message:

This is the mail system at host mail.controlyourself.ca.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

The mail system

: unknown user: "ashah"

Final-Recipient: rfc822; ashah@mail.controlyourself.ca
Action: failed
Status: 5.1.1
Diagnostic-Code: X-Postfix; unknown user: "ashah"