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OWA not working on a cross domain RRS feed

  • Question

  • Hi, 

    We're currently migrating our user from Exchange DomainA to DomainB but we're not ready to move the user from the AD, only the Exchange.  So as far, we allow DomainA users to the DomainB mailbox with AddPermission and that part is working great except for two things.

    1. OWA is not working if we're trying to login with DomainA user credentials 

    Error : The Active Directory resource couldn't be accessed. This may be because the Active Directory object doesn't exist or the object has become corrupted, or because you don't have the correct permissions.

    2. OOF is also not working, we're getting  an Error Unable to connect to server

    The only thing we seen is to convert mailbox as linked mailbox but we don't want to do this

    Is there other option or something we can do to make it work

    Thanks

    Daniel

    Tuesday, June 9, 2015 6:59 PM

Answers

  • Hi Daniel,

    We can try the following steps:

    1. create a mail user for DomainA account in domainB:

    $password = Read-Host "Enter password" -AsSecureString
    New-MailUser -Name "UserA" -Password $password -ExternalEmailAddress UserA@domainA.com -UserPrincipalName UserA@domainB.com

    2. Assign full access permission to a shared mailbox in domainB:

    Add-MailboxPermission -Identity Share@domainB.com -User UserA@domainB.com -AccessRights FullAccess

    3. open the DomainB shared mailbox in OWA by using the following URL with log credential (DomainB\UserA):

    https://mail.domainB.com/owa/Share@domainB.com

    Then check whether the mailbox can be opened or not.

    Regards,


    Please remember to mark the replies as answers if they help, and unmark the answers if they provide no help. If you have feedback for TechNet Support, contact tnmff@microsoft.com.

    Winnie Liang
    TechNet Community Support

    Friday, June 12, 2015 2:52 AM
    Moderator

All replies

  • Did you configure a linked mailbox?

    Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."

    Wednesday, June 10, 2015 12:47 AM
  • No, I don't want to use a linked mailbox, I'm trying to find something else to fix my issue
    Wednesday, June 10, 2015 11:51 AM
  • Hi Daniel,

    We can try the following steps:

    1. create a mail user for DomainA account in domainB:

    $password = Read-Host "Enter password" -AsSecureString
    New-MailUser -Name "UserA" -Password $password -ExternalEmailAddress UserA@domainA.com -UserPrincipalName UserA@domainB.com

    2. Assign full access permission to a shared mailbox in domainB:

    Add-MailboxPermission -Identity Share@domainB.com -User UserA@domainB.com -AccessRights FullAccess

    3. open the DomainB shared mailbox in OWA by using the following URL with log credential (DomainB\UserA):

    https://mail.domainB.com/owa/Share@domainB.com

    Then check whether the mailbox can be opened or not.

    Regards,


    Please remember to mark the replies as answers if they help, and unmark the answers if they provide no help. If you have feedback for TechNet Support, contact tnmff@microsoft.com.

    Winnie Liang
    TechNet Community Support

    Friday, June 12, 2015 2:52 AM
    Moderator