Forums General Discussion an idea, but not suggestion yet

/server command is translated to a set number of commands that IRC protocol understands. Type /debug @debug
then type in your /server command and see how it works.
/debug off to stop it.

It would be possible for mIRC internal works to append stuff to USER command that is sends. And again as I said this is only AN idea. If you can trhink of better I'd be glad to read about it.