MSN Messenger... What are the needed ports?

[Comp01]

I want to know, what are the needed ports just for standard operation on MSN messenger? I use Trillian, and I do not know which ports to allow to let MSN go out...

[CrazyM]

Hi Comp01

For basic IM feature you will require outbound to remote port 1863.
Some features (logins) will likely also require outbound to remote ports 80 & 443.

That should cover the basics.

Regards,

CrazyM