My system run very good with Exchange server 2010 online domain name (abc.com) with IP WAN - 1. Now my boss want add other email to Exchange server with Domain name (xyz.com) - i had bought new IP WAN from ISP suppliers: IP WAN - 2 now my system: Server Exchange ----- Router-- (IP WAN - 1)-------------internet PTR Record ---- IP WAN -1 <-> abc.com PTR Record ---- IP WAN -2 <-> xyz.com all email SMTP in server is send from IP WAN - 1. Problem: on Domain name XYZ.com A (Host / IPv4) STT Name IP Address 1 mail IP WAN - 2 MX (Mail Exchanger) STT Name Host Priority 1 @ XYZ.COM 10 TXT (Text) STT Name Data 1 @ v=spf1 a ip4:IP WAN -2 ~all 2 @ v=spf1 a ip4:IP WAN -1 ~all Please help me solution with Domain name XYZ.COM and IP WAN - 2. How to configuration (A, mx, txt) in this case. many thanks Son

One Exchane server can very easily support two separate e-mail domains. You don't need to add another server. I don't understand what you're asking.Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."

When you want to configure records on Windows Server, you can refer to this document: Managing DNS Records http://technet.microsoft.com/en-us/library/bb727018.aspx If you are not configuring records on Windows Server, I suggest you ask your problem on that OS forum. Thanks, EvanEvan Liu TechNet Community Support

When you want to configure records on Windows Server, you can refer to this document: Managing DNS Records http://technet.microsoft.com/en-us/library/bb727018.aspx If you are not configuring records on Windows Server, I suggest you ask your problem on that OS forum. Thanks, EvanEvan Liu TechNet Community Support