Nat IP Loopback

[Maxer_1]

I have an OfficeConnect ADSL Wireless 108Mbps 11g Firewall Router And I'm trying to enable Ip Loopback.



On my previous router (a Zyxel) I could enable this function by telnetting to the router, but I can't find that option on this router. Is it possible to enable ip loopback?



I have a mailserver which I can reach by domain name while I'm outside my network, but 'inside' my network, I can't reach my mailserver by using the domain name. (It works if I change the settings to an internal ip) Is there any other way to reach the internal server from inside and outside the network by using it's external ip? (Maybe through routing or something)



Thanks in advance.