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Email address queries RRS feed

  • Question

  • Hi,

    We will be migrating Exchange 2010 to 2016. We are requested to change the current email address to a new format for compliance.

    The existing email address for a user: abc@domain

    New email address: a_b_c@domain

    AD account ID: abc

    I have the following queries:

    1) Can the AD account ID (abc) have 2 email addresses (abc@domain) and new email address (a_b_c@domain) concurrently? 

    2) If the old and new email address can be coexist with single AD account ID, does it mean that the storage for email abc@domain and email a_b_c@domain have its individual storage? Since there are 2 email addresses, does it mean that the user has 2 passwords? If so, anyway to sync the 2 passwords for the convenient of the user? 

    3) Correct me that AD account ID is coupled with the email address ? That is when AD account ID "abc" is created, then the email address will be abc@domain? If so, does it mean that a_b_c@domain will require a new AD account of "a_b_c"?

    4) If (3) is true, that means 1 user has 2 AD accounts and 2 passwords (1 for abc and 1 for a_b_c)? 

    5) We have thousand over users and there are many applications (in house and cloud) that using abc@domain as login ID, how to go about changing to a_b_c@domain as login ID in phases?



    MS Exchange forum

    Thursday, November 14, 2019 8:13 AM

Answers

All replies

  • Hi starfish,

    1. The mapping between AD user and Exchange mailbox is one to one. In other words, an AD User can have only one mailbox.

    However, various solutions exist that enable users to have multiple email addresses and even have access to separate mailboxes.

    2. If you just want your users to have different alias, for example abc@contoso.com and a_b_c@contoso.com. You can add the new alias by double clicking the recipient in EAC, navigate to email address and add there. Then abc@contoso.com will receive all the emails sent to a_b_c@contoso.com. They don't have individual storage. There won't be 2 passwords either.

       If the user actually needs separate mailboxes, then the solution is to create a new AD user account that would actually own the new Exchange mailbox, then disable the AD account for that new user. Right-click the mailbox, and select the Manage Send As Permission to let the primary AD user send as this new mailbox or the Manage Full Access Permission to give the primary AD user full access to the mailbox.

    3. The email address for the AD account abc isn't necessarily abc@contoso. You can determine it using the parameter -alias.

    4. 3 isn't true.

    5. You can create a new email address policy and specify the types of recipients this email address policy will apply to. Then apply this email address policy and synchronize changes to the cloud. You can check this for creating new email address policy: Procedures for email address policies in Exchange Server.

    Regards,

    Beverly Gao


    Please remember to mark the replies as answers if they helped. If you have feedback for TechNet Subscriber Support, contact tnsf@microsoft.com.

    Friday, November 15, 2019 5:53 AM
  • Hi,

    How to perform (3) and (5) ?


    MS Exchange forum


    • Edited by starfish168 Tuesday, November 19, 2019 1:33 AM
    Monday, November 18, 2019 5:50 AM
  • Hi starfish,

    3. You can run the enable-mailbox command with different Identity and Alias. For example,

    Enable-Mailbox -Identity Henry -Alias Pop

    Then the email address for the account Henry will be Pop@domain.com like this

    5. To create a new email address policy and specify the types of recipients this email address policy will apply to, you can refer to this article, https://docs.microsoft.com/en-us/Exchange/email-addresses-and-address-books/email-address-policies/eap-procedures?view=exchserver-2019

    Regards,

    Beverly Gao


    Please remember to mark the replies as answers if they helped. If you have feedback for TechNet Subscriber Support, contact tnsf@microsoft.com.


    Thursday, November 21, 2019 9:17 AM
  • For point (2), the result is that the recipient will recv mail with sender abc@contoso.com and a_b_c@contoso.com. How to set default to  a_b_c@contoso.com? That is someone send mail to abc@contoso.com or a_b_c@contoso.com, abc will recv the mail but when reply or sending new mail out, the sender is a_b_c@contoso.com?

    MS Exchange forum

    Monday, November 25, 2019 8:06 AM