Sep 20 2018 04:37 AM - edited Sep 20 2018 04:48 AM
Hello everyone,
I have a shared mailbox support@domain1.com.
The problem: When I'm trying to create a shared mailbox support@domain2.com this results in an error saying that each mailbox should have unique name and that this name is already in use.
I have verified both domains an set up dns correctly. Doesn't O365 separate email addresses from different domains even if they have the same local part (support)?
Is it even possible to have the same local part for emails from two domains?
I need an email address for support for all of my domains and since I'm migrating from another service, they all must be in the form support@domain.com.
Thank you in advance for your input, Matti
Sep 20 2018 04:53 AM
Hi!
Please see this blogpost:
Sep 20 2018 05:02 AM
Sep 20 2018 07:25 AM
Simply use PowerShell, the UI is limited for this scenario.
Sep 20 2018 07:39 AM
Sep 20 2018 07:47 AM
Sep 20 2018 08:05 AM
Sep 20 2018 10:44 AM - edited Sep 20 2018 10:49 AM
ok! i've managed to create 3 shared mailboxes with the addresses of support@domain1.com , support@domain2.com and support@domain3.com. My setup was exchange online only and i did it from the exchange admin center only.
Go to exchange online admin center -> recipients -> shared : click the plus sign
Here you can type the name and also alias if you click the "more options" button..(see attached file)
Type a name and alias different to the mailaddress, like support_uk or something and set the mailaddress to ex. support@domain1.com!
Repeat this when creating another shared mailbox:
name/alias: support_us
mailaddress: support@domain2.com
tested and confirmed working in my test environment
/adam
Sep 20 2018 11:09 AM
Sep 20 2018 11:24 AM
Are both the name and alias of the domain2-mailbox you try to create unique?
Sep 20 2018 08:47 PM
SolutionMoi Matti,
The problem is that when you create a shared mailbox, the alias with the local name is also created. Thus, regardless of the domain part, you have the error you described.
Luckily the workaround is quite simple. Just create a shared mailbox with unique local name, such as support_domain2@domain2.com. After it is created, edit the mailbox email addresses to change the default address to support@domain2.com and you're done!
Sep 16 2019 01:16 AM
I have put this on uservoice, please vote for it. It links back to this topic.
https://office365.uservoice.com/forums/273493-office-365-admin/suggestions/38606767-office365-multip...