Uh... none of that really makes any sense. First of all, anything regarding serving, we can't help with... but as far as connections go...
Your IP has nothing to do with entering a channel unless there is a script being run in the channel that is preventing access to anyone without the correct IP, or if you are banned in that channel. Dalnet (or any network) has nothing to do with it... the networks always know your IP.
If you provide the error message, it will help. If the channel is invite only, or requires you to have a registered nick, or it says you are banned, or whatever... we need to know that to help.
If you are referring to mIRC's options (Local Info section under Connect), then try changing how it's getting the IP/DNS information.
