hello, Can anybody give me the step by step method of how to keep a mail server behind the firewall. right now my mail server has two NIC's and i want to take it to only private network so that mails will be sent and received only though the ISA Server. when I configure server publishing all my other webservers published stop working. I also change the MX record in the DNS. But nothing comes out. Can anyone tell me step by step as how it can be done. Thanks