on me:*:JOIN:#: {
if ($chan == #channel1) { channel1 }
if ($chan == #channel2) { channel2 }
if ($chan == #channel3) { mode # +isnt }
}
alias channel1 {
echo -t joined #channel1!
}
alias channel2 {
echo -t joined #channel2!
}


Works for me! if it doesn't please send the exact alias you use