Hi, someone can help me with this error.

An unexpected error occurred while processing your SUBSCRIBE command. 
The command has been aborted and the system manager will be notified. 
Save the enclosed "error traceback" if you want to report this problem; 
it contains important information without which it may not be possible 
to diagnose the problem. Serious error occurred - traceback follows 
------------------------------------------ >>> Error X'0100003B' 
searching DBMS list <<< -> Severity: Error -> Facility: DBMS interface 
-> Abstract: SQL error

only shows this error when i try to add or suscribe any email address to 
the list or some people send email to 
[log in to unmask]

may be this is a connection to the Database error, but i didn't have 
this error before.

Now the server has a firewall may be some port is blocked