Consider the following scenario:
- You operate a Microsoft Exchange Server 2016 environment.
- Cumulative Update 5 is installed for Exchange Server 2016.
- You have an email address policy that generates the first name or last name (%g, %s) as the primary email address for mailboxes.
- You try to create or manage a mailbox that has one of the following umlaut characters in the first or last name: “ä”, “ö”, “ü”, or “ß”. For example, the first name is “Thomas”, and the last name is “Müller”.
In this scenario, you receive an error message that resembles the following:
The address 'SMTP:Thomas.Mÿller@contoso.com' is invalid: Specified argument was out of the rangeof valid values.Parameter name: The address 'Thomas.Mÿller@contoso.com' is not a valid SMTP address.
The characters “ä”, “ö”, “ü”, and “ß” get incorrectly transformed into ”ÿ” instead of “ae”, “oe”, “ue”, or “ss” as expected.
Article ID: 4019534 - Last Review: 27.6.2017 - Revision: 26