Make guest users visible in the Global Address List

• As a part of my previous work JoniS@hostexo.com was added as a guest user in tenant mpan.tk
• The user is hidden from address list in tenant mpan.tk (this is by design)

• Attempting to add JoniS@hostexo.com as a contact in mpan.tk
• We will not be able to add jonis@hostexo.com to mpan.tk as the SMTP is already in use by the guest mail user

• To make the guest user visible in GAL we would run a PowerShell command in the tenant mpan.tk :

  get-user JoniS@hostexo.com | Set-MailUser -HiddenFromAddressListsEnabled $false

• NOTE: we cannot have a MailUser and a Guest User with the same SMTP