[ccnpding]

thanks mcnallym.
what kind of DNS records should be used in the purblic DNS server?
A record like "owaserver.webmail.mydomain.com" x.x.x.x
or NS record like"webmail.mydomain.com" x.x.x.x
pointing to my FW's two IPs?

now i have NS record of "webmail.mydomain.com", and when i nslookup "webmail.mydomain.com", it responds with the FW's IPs. and butwhen i tried to ping "owaserver.webmail.mydomain.com" and "webmail.mydomain.com", it said "Ping request could not find the host".