Unsupported Characters for Exchange 2010 Object Names

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Applies to: Exchange Server 2010 SP3, Exchange Server 2010 SP2

This article describes characters that you can’t use in object or component names in Exchange 2010. When you create names for objects or components in Exchange 2010, the names can’t contain unsupported characters, even though you may be able to create an object using an unsupported character. Also, if you try to import or connect to objects whose names contain unsupported characters, you may receive an error message or experience unexpected behavior.

Unsupported characters

The following table lists characters that aren’t supported for use in the names of Exchange-related objects or components. The table also lists the scenario in which problems may occur if unsupported characters are used. Note that there is a maximum length of 64 characters for each object listed in the table.

Exchange object or component Exchange scenario Unsupported characters

Email domain name

Simple Mail Transfer Protocol (SMTP) connector

~ ` ! @ # $ % ^ & * ( ) + = { } | [ ] \ : " ; < > , . ? /

Host name of connector address space

Mail flow

.. (two periods)

Host name for Exchange servers

SMTP

_ (underscore)

Organization or site name

Running the Setup program or moving mailboxes

~ ` ! @ # $ % ^ & * ( ) _ + = { } | [ ] \ : " ; ' < > , . ? /

Organization internal directory name

Directory

~ ` ! @ # $ % ^ & * ( ) _ + = { } | [ ] \ : " ; ' < > , . ? /

Public folder tree name

Viewing and creating the public folder

: ;

Recipient name

SMTP

' "

Recipient policy SMTP address

Viewing the public folder hierarchy

~ ` ! @ # $ % ^ & * ( ) + = { } | [ ] \ : " ; < > , . ? /

Recipient policy SMTP address host name

Mail flow

.. (two periods)

Site internal directory name

Viewing the public folder hierarchy

? ( ) *

Smart host name

SMTP

Leading or trailing spaces

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