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Internal Domain and External Domain RRS feed

  • Question

  • Hello Team,

    We have users who uses internal domain as testing.test and external domain as abc.com...

    Presently they user email address is in user1@abc.com but the AD domain name is in testing.test ...they are using open source to send email..planned to migrate to exchange 2010 ...installed exchange under domain testing.com...Created test user and found the email address is in user1@testing.com....Kindly suggest what is the best praticse to make the email address stamp with external domain name as user1@abc.com....or is there any articles you have come accross on implementing exchange server with the internal dns and external dns name differently...

    Also let me know shall address space will work on the above case


    Exchange Queries

    Monday, February 13, 2012 9:45 AM

Answers

  • Hello

    Your AD domain name doesn't need to be the same as your external SMTP domain.  Have a look at your Accepted Domains and Email Address Policies (Organization tree -> Hub Transport) - you need to have an accepted domain for your external SMTP domain and then you can configure an exmail addres policy using it.

    If you are using a shared address space between your open source and Exchange 2010 mail systems then you should configure the accepted domain as "internal relay" until all of your mailboxes have been created on 2010.

    Steve

    Monday, February 13, 2012 9:56 AM

All replies

  • Hi,

    If you want Exchange to accept mail for @abc.com, you need to add the domain as an accepted domain. Besides that you need to create a address policy that will create the corresponding e-mail addresses for all AD users. Based on the priority of the policies (default or not) the correct e-mail address will be set as a default.

    Please see the following links:

    • Understanding Accepted Domains - http://technet.microsoft.com/en-us/library/bb124423.aspx
    • Understanding E-Mail Address Policies - http://technet.microsoft.com/en-us/library/bb232171.aspx

    Hope it will help you.

    Cor


    Technical Consultant Exchange | MCP, MCSA, MCSE, MCTS, MCITP | Blog: http://www.reinhard-online.nl | Follow me on twitter: correinhard | Please, feel free to nominate me for MVP @ https://mvp.support.microsoft.com/gp/mvpnominate

    Monday, February 13, 2012 9:54 AM
  • Hello

    Your AD domain name doesn't need to be the same as your external SMTP domain.  Have a look at your Accepted Domains and Email Address Policies (Organization tree -> Hub Transport) - you need to have an accepted domain for your external SMTP domain and then you can configure an exmail addres policy using it.

    If you are using a shared address space between your open source and Exchange 2010 mail systems then you should configure the accepted domain as "internal relay" until all of your mailboxes have been created on 2010.

    Steve

    Monday, February 13, 2012 9:56 AM
  • Okay..Steve...Could you please say how the same is applied for lync sip domain name....if we have internal and external domain name in the same enviroment..which is best pratices..shall we need to give internal dns name as sip domain or external dns name as sip domain...But the users need to access both internal as well as external....

    Exchange Queries

    Monday, February 13, 2012 10:25 AM
  • I'm not a Lync expert but I beleive you can use the primary SMTP address (which would be the public one) for the SIP domain name.
    Monday, February 13, 2012 12:25 PM