adrian kok wrote: > Sorry. I use fake name No, you didn't. www.mydomain.com does exist, so it cannot be fake. > host command can return right ip address I don't really like people who misuse existing domains for questions like this, as it really makes it harder to debug things. > My question is > > I am curious why the 2nd line is > > 171203020173.upstream.com instead of www.mydomain.com Because you don't have a correct reverse DNS setting for your domain. But as you don't say what it is, I won't look further. Ralph -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 189 bytes Desc: not available URL: <http://lists.centos.org/pipermail/centos/attachments/20090127/f65603a4/attachment-0004.sig>