Returned mail: Data format error

[The Post Office]

The original message was received at Mon, 22 Jan 2007 14:35:38 -0500
from linux.cz [17.153.83.125]

----- The following addresses had permanent fatal errors -----
<databases na linux.cz>

----- Transcript of the session follows -----
... while talking to host linux.cz.:
554 <databases na linux.cz>... Mail quota exceeded
554 <databases na linux.cz>... Service unavailable