Team/Group's MailNickname - allowed characters or regex

Question

I'm looking for an exact set of allowed characters for the mailNickname when creating a new Group/Team.

I found some documentation at https://docs.microsoft.com/en-us/powershell/module/exchange/set-unifiedgroup?view=exchange-ps#parameters which describes Exchange's Alias but, when creating a Team with displayName Tést, for example, the é is removed from the mailNickname - so this doesn't seem to map 100%.

So, my question is: is there a concrete list of characters, or a Regex we can use, to validate a mailNickname locally?

Currently I use this one, but it doesn't seem to be completely correct:

^(?!\.)(?!.*\.$)(?!.*?\.\.)[a-zA-Z0-9\u00A1-\u00FF!#$%&'*+\-/=?^_`{}|~.]+$

Answer 1

From the create group documentation, the mailNickname cannot include the following characters:
@()\[]";:.<>,SPACE