Hello, Ran into an interesting problem. Have a reseller on the VPS of which one of its clients got hacked and injected a bunch of spam into the system. This of course poisoned the main IP address. So decided to give the reseller (and their sites) their own shared IP address to prevent them from blacklisting the main IP again thus compromising the rest of the other folks on the VPS. Turns out by swapping out an IP address the mail IP does not change. It continues to be the same as the main IP address. In other words you can have one reseller mess up your main IP address if one of their sites get compromised. According to WHM/cPanel, if you give a site a dedicated IP address, the mail IP and select the correct option in the WHM interface, the mail IP will change to the dedicated IP address. Tried this and wrong again, did not work (interestingly a few of my sites that have dedicated IP address did have dedicated mail IPs without this option turned on). KH tech baffled also. In any event, does anyone have and ideas of how to use shared IPs and also have that IP become the mail IP for those sites without using the main IP? Thanks.