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Ian_Culliver's avatar
Ian_Culliver
Copper Contributor
Jul 25, 2019

Exchange Online Mail Enabled Users redirecting to eternal SMTP

Hi all, I have a client that has been using Ex2010 and has used mail contacts object to effectively build a reverse DL. They have say 30 Unique contacts with a proxy address inside their Org, but us...
  • VasilMichev's avatar
    Jul 25, 2019

    Exchange Online does not enforce uniqueness of the ExternalEmailAddress property, so you should have no trouble doing this:

     

    [10:23:47]# Get-MailUser MU* | ft Name,Primary*,Externa*
    Name PrimarySmtpAddress           ExternalEmailAddress
    ---- ------------------           --------------------
    MU1  MU1@michev.info              SMTP:external@domain.com
    MU2  MU2@michev.info              SMTP:external@domain.com
     
    Just make sure you create them with different PrimarySMTPaddresses (use the relevant parameter for new-mailuser).

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