This isn't a problem with mIRC, but with your router. Routers that use NAT often have this problem. A different router would solve your problem. Of course, that costs money. But afaik, that's the only way to get around it unless there is a setting to disable the NAT (not sure if any routers have such a setting). If you search the forum for "router NAT" (no quotes), you can probably find more information about this problem. Note that this affects RESUMES only.
