Forum Discussion
Shared mailbox with the same email (local part) can't be created to a different domain
Moi 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!
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
I found the option to type the alias. But I get this error:
The proxy address "SMTP:asiakaspalvelu@domain2" is already being used by the proxy addresses or LegacyExchangeDN of "Domain 1 display name". Please choose another proxy address.( The "UserMailbox" with display name "Domain 1 display name" is already setup and using the same address.)
Are both the name and alias of the domain2-mailbox you try to create unique?
