I have a serious maybe stupid question...

I have Cpanel installed on my box. My question is , Will I need to use 2 LAN cards on my box for each ip to work effectively?

Reason I am asking is because my clients are having problems with theirs mail being (relayed) sent and received. I have 2 different ip address assigned to each nameserver. They are using "HORDE"...

but I was wondering if since I have only one LAN card installed then my second nameserver is "lame" or not functioning properly....

Any advise is greatly appreciated.

Thanks

you should be able to get it to work on one network card but you will need to configure horde/cpanel and everything else to accept traffic only for the interface and site that it is setup on. make sure that the dns records are right as well. like mx and A records