MailTips: External Recipients

Scenario

The External Recipients MailTip is displayed if the sender adds a recipient that’s external, or adds a distribution group that contains external recipients.

This MailTip informs senders if a message they’re composing will leave the organization, helping them make the correct decisions about wording, tone, and content.

By default, this MailTip is turned off. You can turn it on using the Set-OrganizationConfig cmdlet. For details, see Configure Organizational Settings for MailTips.

If part of your user mailboxes are hosted on Exchange Online and you’re in coexistence with an Exchange Online scenario, the setting on the remote domain object that represents the remote part of your organization has a direct effect on how this MailTip is processed.

If the remote domain is configured as an internal domain (by setting the IsInternal parameter on the remote domain object to $true), any recipients in this remote domain will be treated as internal and therefore the External Recipients MailTip won’t be displayed. However, if the remote domain isn’t configured as an internal domain, the recipients in that domain will be considered external and this MailTip will be displayed when a message is being composed to those recipients.

Note:

This MailTip isn’t evaluated when composing a message to a distribution group in the remote domain.