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DNS misconfiguration or what is wrong here?

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rebayona

Technical User
Oct 22, 2001
32
CO
Hi again. I'm new to linux, and it took me several weeks to make this thing working, but thanks to this helpful forum I was able to do it.
I'm running a server in order to be mailserver, DNS server and proxy server. For now, my mail server is running fine and DNS .... I'm not quite sure. I can send and receive messages, but sending them from some places work, but from other they doesn't. The DNS server name is ns1.setecsa.com and it was registered as primary name server with netsol. Mail server is mail.setecsa.com, and if you use a POP mail (web based) retreiver, it works perfect. But, if you try to ping, traceroute, or any attempt to resolve names on my domain (setecsa.com), they fail. Wrong IP to mail.setecsa.com, or similar messages. I called my ISP (I have 6 public IP's) and asked them about it, and they said something about not being able to use ns1.setecsa.com as a nameserver, as its IP address is already registered as setecsa6.att.net.co
My question is: Should I register setecsa6.att.ent.co as nameserver with netsol, or what should I do? What might be the problem? What am I missing here, or what am I doing wrong?

I know something's right since I'm able to receive mail under my domain name (if you want to test it, please send me a mail to test@setecsa.com), but something's wrong since some mailers doesn't see my server, nor resolve any name under my domain.

I can send you my config files for named if you want them. Or any test, config file, etc you might want to see. I'm running RedHat 7.1

Thanks a lot

Rafael

PS.

On another related mail topic, if it's OK if I read POP mails using PINE, and other mail programs, like Eudora? (Newbiest question)
 
Hi,

Under reverse dns the IP address for ns1.setecsa.com (200.74.133.158) does indeed resolve to setecsa6.att.net.co . Is the att.net.co domain yours ?

Regards
 
No, it is my ISP. (AT&T)

Thanks for replying,

Rafael
 
It might be wiser to use setecsa6.att.net.co as my Primary DNS, or I can still use ns1.setecsa.com?
 
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