DNS and dynamic DNS

[Techwhore]

I have a linux firewall running NAT and two machines behind that (win2k, and 98). I also use a dynamic DNS that is available to me for free through my linux distribution.

I'm looking to add another linux box, for a mail server. I'm a poor college kid who's not looking to spend money so i don't wanna buy a domain. I plan to use my dynamic DNS, BUT I would like a new name for this box (independant of the other). Since all 4 of my machines would share the same IP, how do i go about doing this? Do i need to make my firewall a DNS Server? Is that possible?

Thanks for any insight on the matter.

 

[Nightfall]

Ok, I will try to help you even though I am not a linux guru.

First off, I haven't had any luck in setting up a mail server without a domain name. You need to have a domain name so the internet knows where to route the mail. You might be able to use it with a IP address, but I don't know.

To make life simple, go to domainmonger.com and register a domain for $17 a year...very cheap. Then, you can use zoneedit.com for DNS or you can use the domainmonger.com utilities and set up mail forwarding or SMTP on your linux box to get mail from your domain.

That is the most effective solution I see.

 

[reicherb]

You can't run a mail server without a domain name. Godaddy registers domains for $9/yr.

 

[aspitzer]

you need a domain name. 35 bucks or less..
something like this... one of MANY ways to do it...

DNS:
linux1.domain.com. MX 10 MAIN-BOX.domain.com.
win1.domain.com. MX 10 MAIN-BOX.domain.com.
bsd1.domain.com. MX 10 MAIN-BOX.domain.com.


/etc/mail/mailertable
linux1.domain.com smtp:192.168.1.1
win1.domain.com smtp:192.168.1.2
bsd1.domain.com smtp:192.168.1.3

anything@linux1.domain.com will be forwarded to smtp server on 192.168.1.1...