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Internal vs External DNS of Exchange

how to check which Internal and External DNS pointing to my  Exchange server 2003.
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Yogesh_Exchange_Expert
Asked:
Yogesh_Exchange_Expert
2 Solutions
 
Gerald26Commented:
I dont know if I understood your question really well "What DNS pointing TO my exchange 2003"
Is your exchange server also a DNS server ? Is it a DC ? Is the DNS server on Exchange reachable from Internet ? Or do you want to know which DNS exchange is using to deliver mails ?

Anyway if you want some clarification about how your server is using DNS servers for resolving AD objects and sending mails, here is how it goes :

Windows server will use Network local area connexion DNS to resolve names in Domain. Forwareded requests to other domains (ie. Internet) are made by the DNS Server forwarders, which is a DC in most cases. Exchange will use this DNS if no external are explicitely set.

Exchange server 2003 can also send mails from its default SMTP connector using external DNS (Administrative group -> server -> protocol ->SMTP. Properties -> Delivery -> Advanced - > Configure DNS)
With these DNS set, Exchange will resolve names and find domains MX using them rather than Windows' default DNS.

Connectors : Are used to choose delivery policy, mostly used to select a smarthost to transfer the mails to. This smarthost will resolve domain names using its configured DNS.

Gerald
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irweazelwallisCommented:
You can use NSLOOKUP and webpage tools to verify external records and nslookup can do the same internally

to use nslookup you can point it at a public external DNS server "server servename"

if you want to check just mx records - use set type=mx and then input the domain name you are running from your exchange server

If you google nslookup you can find web sites that host those tools to show records for a domain
kloth.net is one of the popular ones
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