For example, IIS can use one IP & one port to separate 2 domain names by
filling the host header name.
i.e.
www.domain1.com --> same IP + same port --> local\domain1\
www.domain2.com --> same IP + same port --> local\domain2\
Can DNews do that function?
No, dnews supports virtual domains with different ip addresses, but the
NNTP protocol does not allow virtual domains with the same ip address, this
is just not possible without extending NNTP which wouldn't help without
modifying all news clients as well so it's sort of impossible sorry.
ChrisP.