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DNS question for a brand new 2003 server running exchange.

I just setup a new windows 2003 server. I installed the basic server plus IIS and exchange. It is running on a dsl line with a static ip through a linksys router. I setup port forwarding for all of the ports I am going to need. When I login to godaddy the first thing I did was setup domain forwarding through their wizard. I set the domain to point to the static ip. This worked great and when you type in the domain the website comes up. Next I loaded up their mx wizard. the only options it gives me are to add a mx record and then specify a server for it. I put in the static ip of the server and set it as the first mx record. Now when I send mail to one of the accounts I created I get this error - PERM_FAILURE: SMTP Error (state 10): 550 5.7.1 Unable to relay

I can login to exchange from the webclient and send mail but I cannot receive mail. I have never setup dns before and when I look at the dns settings on the server the records point to 192.168.0.157 which is the local static ip I have setup that the router forwards to. I assume that the dns is correct because the website loads fine its just the mail that doesnt work. I can enter an advanced mode on the godaddy page for setting my DNS where I can change all the records. If someone can help me out I would be much appreciative.
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dfluxnet
Asked:
dfluxnet
1 Solution
 
j0hnhawkCommented:
http://support.microsoft.com/servicedesks/webcasts/wc011801/wcblurb011801.asp

I know this is windows 2000 but a good coverage for basic understanding of Internet Mail with Exchange.

One thing to do is to verify connectivity from the Internet into your smtp relay

Take the dns record of your MX for your domain which should be pointing to your linksys routers ip.

then do a telnet [domainnameOfMXRecord] 25

You should get  a response on port 25 then type helo domain

If this works, it means your relay is available to Internet users.
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dfluxnetAuthor Commented:
Thanks for the info. It turned out that the DNS had not updated yet and that was the reason for the problems but the info you provide is very helpful and I will use in the future.
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