you port forward the ports and what port you use it should default been this.
<!-- Chatserver (channels) information. Defaults shown -->
<chatserver>
<host>channels.eqemulator.net</host>
<port>7778</port>
</chatserver>
<!-- Mailserver (in-game mail) information. Defaults shown -->
<mailserver>
<host>channels.eqemulator.net</host>
<port>7779</port>
</mailserver>