Forwarding the webmail address to the internet

Posted on 2009-04-22
Last Modified: 2012-05-06
Hi All,
I have a local network domain name for a company that host their email outside the office, the issue is that the domain name they are using for the local network is the same as the domain for their emails, and sometimes they need to use the webmail address from inside the office, the problem is that when you request the webmail address it search for it in the local network and I need a way to let the browser go to the correct location on the internet, so what do you suggest would be a good soultion for that, i tried adding an A Host in the DNS but that doesn't seem to work, and as the network has an MS ISA server, can we create an access rule for that?
Question by:sammyfaisal
    LVL 7

    Expert Comment

    A way to bypass the DNS for this address, is the hosts file in the windows\system32\etc folder
    Add an entry there for the webaddress to the correct IP.

    LVL 14

    Expert Comment

    Split DNS is what you need (although it sounds like you have already tried this unsuccessfully).....editing the hosts file for laptop users would mean that they couldn't access their webmail from externally (the ip address would resolve to the internal address....)...

    have a look at

    LVL 7

    Accepted Solution

    I think that if you specify in the host file the domain name (example: and map it to the external address then you should be fine.

    It would be useless to use the host file to specify an internal address, because your dns is capable of resolving inside IP addresses and maybe this is a point that Roachy didnt understand very well

    LVL 14

    Expert Comment

    Sorry - Dimitris you are right.....I misread the q - "I have a local network domain name for a company that host their email outside the office"

    You are right - a hosts file edit  would resolve the issue....
    LVL 5

    Expert Comment

    1. An A Record of www would usually solve this so would resolve internally but would go externally but if your email (webmail) has values that use some pages that reside on (ie the way they code it) then this won't work - which is what it sounds like is happening..
    2. Don't change/split the DNS for as you may start to get problems with computer not authenticating propertly.
    3. You could setup IMAP to the mail server and use a client based software (Outlook, Thunderbird).
    4. If it's only a few computers, you could rebuild the DC with the correct naming convention (ie domain.local).

    Of course is your domain name.
    LVL 1

    Author Closing Comment

    I guess I should've thought of that all along, thanks alot

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