[rules-users] Returned mail: Data format error

This message was not delivered due to the following reason(s): Your message could not be delivered because the destination server was unreachable within the allowed queue period. The amount of time a message is queued before it is returned depends on local configura- tion parameters. Most likely there is a network problem that prevented delivery, but it is also possible that the computer is turned off, or does not have a mail system running right now. Your message was not delivered within 3 days: Server 205.81.115.242 is not responding. The following recipients could not receive this message: <rules-users(a)lists.jboss.org&gt; Please reply to postmaster(a)lists.jboss.org if you feel this message to be in error.