Getting CSS hostname???

mrothuizen — Thu, 18 Nov 2004 16:19:40 GMT

We have a 11501 CSS. Our domain is pointing to the css, the mail and webservers are behind the CSS and the addresses are NAT by the CSS.

The outgoing (NAT VIP) address is the same as the CSS and out domain.

A nslookup to the domain finds the cisco, a tracert finds the css, so it works just fine.

The problem is sometimes when we send mail from a server behind the CSS the mail is returned with this error: "failed to find host name from IP address".

It seems the remote mail server is trying to get the hostname form the server that is sending this message. Since this is a server behind the CSS this is the address of the CSS, witch has no host name.

Is it possible to give the CSS a hostname, or is there another way resolve the hostname for this ip address?

Re: Getting CSS hostname???

seilsz — Thu, 18 Nov 2004 19:24:19 GMT

Sounds like you need a pointer record (PTR) in your DNS server(s) for the VIP on the CSS. For a PTR record, the IP address is represented as a domain name. Ex:

a.b.c.d

would be

d.c.b.a.in-addr.arpa

~Zach

topic Getting CSS hostname??? in Application Networking

Getting CSS hostname???

Re: Getting CSS hostname???