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John Gruber's avatar
John Gruber
Brass Contributor
Dec 06, 2017
Solved

How do I add a guest mail user to adress lists or create a mail contact using the same email address

Hello,   I'm trying to create a mail contact for an external user so we can add the user to an address list. Unfortunately, I can't create the contact because the primary smtp address is taken by...
office 365
  • VasilMichev's avatar
    VasilMichev
    Dec 07, 2017

    To be honest, it's a bit of a mess as you can actually have the same address added twice:

     

    [10:36:59][Login script]# Get-Recipient tempxxx@abv.bg | Ft Name,RecipientType*

Name                RecipientType RecipientTypeDetails
----                ------------- --------------------
temp                MailContact   MailContact
tempxxx_abv.bg#EXT# MailUser      GuestMailUser

    The "trick" is to have the contact first, then provision the Guest account. Doesn't really make much sense to me, but TonyRedmond seems to see the logic in all this and perhaps can explain it better :)

     

  • Afghan Salon's avatar
    Afghan Salon
    Brass Contributor
    Jul 12, 2018

    That is odd - my post has been marked as spam and removed :(. I post it here instead.

     

    As regarding access for external users issues in both Office365 Groups and Teams - this looks by my tenant as follows:

     

    SCENARIO I - external user (ex. @outlook.com or @gmail.com etc.) hasn't been present in my Azure Active Directory (AAD) before

     

    When I add an external user, that is not present in my AAD (complete absence), as a guest to the group (I do it from within my Group site), then that user appears both:

     

    1) in Exchange Admin Center (EAC) as "guest mail-user"

     

    This category of recipient can not be created independently from within EAC as there is only possibility to create "mail-contact" or "mail-user". Therefore I assume that is another type of recipient that is being pulled into EAC from AAD, but can not be created or modified (ex. change of name) in EAC. Some data may be modified from Office 365 Admin>Users.

     

    2)and in AAD as "guest".

     

     

    That user gets not an inviation, but rather declaration: "You've joined the AAA group". 

     

    There are two icons "Email with ease"" and "Read group files". As I click "Email with ease" am instantly redirected to new mail creation within my mail client. As I click "Read group files" am redirected to Office365 group site.

     

    I can not enter "conversations tab" as pop up appears - informing that I should refer to my mailbox to get mails from the group. In case I lost my invitation mail - I would have no idea as what is the mail of the group, because it does not appear anywhere on group site.

     

    This user has no problems to start Teams, but is not present in my Global Address List (GAL) within Outlook.

     

    There are some errors as sometimes I am able to assign licenses to those "guest mail users". Certainly these are errors.

     

    SCENARIO II - external user (ex. @outlook.com or @gmail.com etc.) that is already present in my AAD directory as mail-user.

     

    I add new user as "mail-user" in EAC (as I wanted to have these users be already authenticated for sharing ppurposes). At that time this user is being registered in AAS as "Member".

     

    That user gets not an inviation, but rather declaration: "XXX XXX added you to the AAA group". 

     

    There are two icons "Share notes" and "Check out the team site". As I click "Share notes" am redirected to the Notebook of the group - works fine. As I click "Check out the team site" am redirected to Office365 group site.

     

    I can not enter "conversations tab" as pop up appears - stateing I have no mailbox license. In case I lost my invitation mail - I would have no idea as what is the mail of the group, because it does not appear anywhere on group site. What is more - I am unable to send any mails to that group - as I get postmaster reply stating: " The group AAA isn't set up to receive messages from BBB" ).

     

    This user has problems to start Teams - pop up appears stating that the administrator should turn team for my domain on.

     

    This user is present in my Global Address List (GAL) within Outlook.

     

    This "mail-user" may be assigned license for Office365 without any problems.

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