irc.cuff-link.me resolves to 107.161.19.242 and 107.191.99.39 and 168.235.75.93[my.gshou.com]
Those are 3 different IP addresses to 3 different computer machines. 107.161.19.242 and 168.235.75.93 have an IRC service on +6697, but 107.191.99.39 does not.
As mIRC rotates through these servers, it's going to fail when attempting 107.191.99.39, until it cycles to one of the other two.