I moved from DC/DNS server to a webserver - works but does not.

Posted on 2008-11-19
Last Modified: 2013-11-30
I am in the process of retiring DC's and have moved to a different webserver.  Changed www dns A record to new server edited IIS headers for ip and domain and always works. http request works most of the time, sometimes not.
any ideas how I direct http requests for to www server?
nslookup on returns all dns adresses as well as www server address.
Question by:Greg Hejl
    LVL 58

    Expert Comment



    If looking up (without the www. component) returns the correct IP address of the web server, then the problem is not DNS and would appear to be with IIS itself instead.

    I would suggest you take a look at the host headers in IIS. Consider adding a second host header entry (use the button marked 'Advanced' I believe beside the standard host header/IP configuration section), listening on the same port and IP address as the first is configured to listen on, but with a host header value of too. This should iron out any issues with browsing on either of those domain names.

    LVL 31

    Accepted Solution

    All DCs will automatically register its IP as A-record for in DNS as "sasme as parent" to handle domain-based DFS.
    The web browser that works has propably a setting enabled that it shall try to add www before domain name or that some of the DCs has IIS running with the website and sometimes responds depending on DNS roundrobin.
    If you want to ensure that it always work to use, you nead to install IIS on all DCs and configure them to redirect to
    IIS manager on each DC: Web sites -> Default web site -> Right-click -> Properties -> Home Directory -> "A redirection to a URL"
    LVL 13

    Author Closing Comment

    by:Greg Hejl
    Thanks Henjoh09!
    This is a great option!  I had already done tigermatts suggestion and yours will work great

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