On Thu, May 03, 2001 at 04:39:32PM -0400, Kris von Mach wrote:
>
> So, having multiple A records pointing to the same IP is ok then, when it
> comes to MX?
>
> like this:
>
> IN MX 10 mail.swishmail.com.
> $ORIGIN swishmail.com.
> ; Setup forward DNS for all hosts
> IN A 63.165.246.3
> www IN A 63.165.246.3
> mail IN A 63.165.246.3
> ftp IN A 63.165.246.3
> pop3 IN CNAME swishmail.com.
>
>
> Or should MX mail.swishmail.com point to an IP address that nothing else
> points to? like for example:
>
> IN MX 10 mail.swishmail.com.
> $ORIGIN swishmail.com.
> ; Setup forward DNS for all hosts
> IN A 63.165.246.3
> www IN A 63.165.246.3
> mail IN A 63.165.246.5
> ftp IN A 63.165.246.3
> pop3 IN CNAME swishmail.com.
>
>
> The reason why I am asking is would mail.swishmail.com be considered FQDN
> with the first example? Since mail.swishmail.com would resolve to
> 63.165.246.3, but 63.165.246.3 would resolve to swishmail.com. With the
> second example, forward and reverse would give you mail.swishmail.com ->
> 63.165.256.5 and 63.165.256.5 -> mail.swishmail.com
>
Both are acceptable and are considered FQDNs. FQDNs are only required to
point to IPs. It says nothing about the IP pointing back to the FQDN.
--
---------------------------------
Timothy L. Mayo mailto:[EMAIL PROTECTED]
Senior System Administrator
The National Business Network Inc.
localconnect(sm)
http://www.localconnect.net/
The National Business Network Inc. http://www.nb.net/
One Monroeville Center, Suite 850
Monroeville, PA 15146
(412) 810-8888 Phone
(412) 810-8886 Fax
