[rbldnsd] query rbldnsd using tcp

[furio ercolessi]

On Fri, Nov 30, 2007 at 02:21:18PM -0500, Liqun Du wrote:
> Hi,
> 
> Does anyone know whether rbldnsd supports tcp or not. I wrote an application
> in Java  to query rbldnsd. It only works with UDP. If I use TCP to connect
> to the rbldnsd, the application throws "Connection Refuse" exception. Any
> idea?

See man page [ http://www.corpit.ru/mjt/rbldnsd/rbldnsd.8.html ]:

"There is no TCP mode. If a resource record does not fit in UDP packet (512
 bytes), it will be silently ignored. For most usages, this isn't a problem,
 because there should be only a few RRs in an answer, and because one record 
 is usually sufficient to decide whenever a given entry is "listed" or not. 
 rbldnsd isn't a full-featured nameserver, after all."

furio