We can't help you if you don't show the code you actually used. The only time you'd get that string in message in the code you showed us was is the $_ was something like
:something!something PRIVMSG #channel :Admin!Admin@leet-A0B340B0.host.com PRIVMSG #channel :!quit
(assuming $channel was regexp matching '#channel').

In reply to Re^5: Regexp problem matching commands for IRC bot by ikegami
in thread Regexp problem matching commands for IRC bot by StrifeChild

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