Extracting an IP from DNS records??

[Dougster]

I know nothing about this kind of thing, which is why I need the help of someone who does. My problem is that I'm moving e-mail servers for my domain (matthews.to), but I want to make sure I don't miss any e-mails as my new DNS records propagate over the internet, and some may be sent to my old server even though from my ISP the domain points to the new server.

What I need is the IP address that currently corresponds to the POP3 address "mail.matthews.to", so that I can check my mail on my old server even after I have modified my domain records to my new providers DNS servers. How do I go about finding that out?

I hope I've explained myself well enough, as all this is new to me!

Thanks for your help in advance.

Dougster

 

[Schlocemus]

<< What I need is the IP address that currently corresponds to the POP3 address "mail.matthews.to" >>



bash-2.05$ nslookup mail.matthews.to
Note: nslookup is deprecated and may be removed from future releases.
Consider using the `dig' or `host' programs instead. Run nslookup with
the `-sil[ent]' option to prevent this message from appearing.
Server: 192.168.0.*
Address: 192.168.0.*#53

Non-authoritative answer:
mail.matthews.to canonical name = webmail.register.com.
webmail.register.com canonical name = mail.register-admin.com.criticalpath.net.
Name: mail.register-admin.com.criticalpath.net
Address: 64.97.37.170

bash-2.05$

 

[Phil21]

Keep in mind you may "lose" some mail if you're changing the MX record for your domain to a new IP as well.

-Phil

 

[Dougster]

64.97.37.170 works just fine, thank you very much. How did you do that?

Phil21, could you please explain how I might lose mail? The only thing that I myself am changing is the primary and secondary name servers that my new e-mail host has given me, replacing the old register.com ones. I take it "MX Records" are something they will have changed?

 

[Schlocemus]

<< 64.97.37.170 works just fine, thank you very much. How did you do that?

Phil21, could you please explain how I might lose mail? The only thing that I myself am changing is the primary and secondary name servers that my new e-mail host has given me, replacing the old register.com ones. I take it "MX Records" are something they will have changed? >>



I'm not sure about the second part that Phil was talking about, but a little program called <nslookup> will find the IP address associated with any DNS record It's actually quite simple, unfortunately if you are running some version of Win9x, you don't have built-in access (correct if I'm wrong) to it, but it should be there in Win2k. If you want to use it online, I think I remember in the past something like www.network-tools.com

 

[gopunk]

also, ping and tracert in the command line will also display the IP.