Characters that are not supported for object names in Exchange

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Article ID: 841091 - View products that this article applies to.
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INTRODUCTION

This article describes characters that you cannot use in object names in Microsoft Exchange Server 5.5, Exchange 2000 Server, and Exchange Server 2003.

You may have to create names for components or objects in Exchange, import objects, or connect to objects. This article contains a list of characters that these object names might contain but that are not supported in Exchange. If you try to connect to objects or work with objects, and the names of those objects contain characters that are not supported, you may receive error messages or unexpected results.

More information

Microsoft Exchange Server 5.5

The following table lists characters that Exchange Server 5.5 does not support in component names or object names.
Collapse this tableExpand this table
Exchange objectExchange scenario or componentUnsupported charactersCharacter limit
Mailbox nameDirectory Synchronization Service (DXA), comma10
Distribution group nameSystem Network Architecture Distribution Service (SNADS)- hyphen
Service account passwordRunning the Setup programan ALT code
Host nameSimple Mail Transfer Protocol (SMTP)_ underscore
PasswordMicrosoft Exchange Connector for Microsoft Mail* asterisk
Any symbol or punctuation character
Any numeral

Microsoft Exchange 2000 Server

The following table lists characters that Exchange 2000 Server does not support in component or object names.
Collapse this tableExpand this table
Exchange objectExchange scenario or componentUnsupported charactersCharacter limit
Organization name, site nameRunning the Setup program, moving mailboxes~ tilde
` grave accent
! exclamation point
@ at sign
# number sign
$ dollar sign
% percent
^ caret
& ampersand
* asterisk
() parentheses
_ underscore
+ plus sign
= equal sign
{} braces
[] brackets
| vertical bar
\ backslash
: colon
; semicolon
" quotation mark
' apostrophe
<> angle brackets
, comma
. period
? question mark
/ slash mark
64
Administrative group nameRunning the Setup program~ tilde
` grave accent
! exclamation point
@ at sign
# number sign
$ dollar sign
% percent
^ caret
& ampersand
* asterisk
() parentheses
_ underscore
+ plus sign
= equal sign
{} braces
[] brackets
| vertical bar
\ backslash
: colon
; semicolon
" quotation mark
' apostrophe
<> angle brackets
, comma
. period
? question mark
/ slash mark
Exchange 5.5 computer nameConnection Agreements; mail flow. period
E-mail domain fieldSMTP connector~ tilde
` grave accent
! exclamation point
@ at sign
# number sign
$ dollar sign
% percent
^ caret
& ampersand
* asterisk
() parentheses
+ plus sign
= equal sign
{} braces
[] brackets
| vertical bar
\ backslash
: colon
; semicolon
" quotation mark
<> angle brackets
, comma
. period
? question mark
/ slash
DNS namespaceRunning the Setup program_ underscore
The common name attribute, the obj-user attributeLightweight directory access protocol (LDAP) directory information migration. period20
Smart host nameSMTP Leading spaces or trailing spaces
RFAX addressExport user attributes by using the Ldifde tool or the Csvde toolAcute accent
Script filesExchange workflow applicationCharacter sets that do not support double-byte characters (DBCS)
Recipient policy SMTP addressViewing public folder hierarchy~ tilde
` grave accent
! exclamation point
@ at sign
# number sign
$ dollar sign
% percent
^ caret
& ampersand
* asterisk
() parentheses
+ plus sign
= equal sign
{} braces
[] brackets
| vertical bar
\ backslash
: colon
; semicolon
" quotation mark
<> angle brackets
, comma
. period
? question mark
/ slash
Recipient policy SMTP address host nameMail Flow.. two periods
Host name of connector address spaceMail Flow.. two periods
Recipient nameSMTP' apostrophe
" quotation mark
Exchange Server host nameSMTP_ underscore
Organization internal directory nameDirectory~ tilde
` grave accent
! exclamation point
@ at sign
# number sign
$ dollar sign
% percent
^ caret
& ampersand
* asterisk
() parentheses
_ underscore
+ plus sign
= equal sign
{} braces
[] brackets
| vertical bar
\ backslash
: colon
; semicolon
" quotation mark
' apostrophe
<> angle brackets
, comma
. period
? question mark
/ slash
Site internal directory nameViewing the public folder hierarchy? question mark
() parentheses
* asterisk

Microsoft Exchange Server 2003

Collapse this tableExpand this table
Exchange objectExchange scenario or componentUnsupported charactersCharacter limit
Organization name, site nameRunning the Setup program, moving mailboxes~ tilde
` grave accent
! exclamation point
@ at sign
# number sign
$ dollar sign
% percent
^ caret
& ampersand
* asterisk
() parentheses
_ underscore
+ plus sign
= equal sign
{} braces
[] brackets
| vertical bar
\ backslash
: colon
; semicolon
" quotation mark
' apostrophe
<> angle brackets
, comma
. period
? question mark
/ slash
64
Administrative group nameRunning the Setup program~ tilde
` grave accent
! exclamation point
@ at sign
# number sign
$ dollar sign
% percent
^ caret
& ampersand
* asterisk
() parentheses
_ underscore
+ plus sign
= equal sign
{} braces
[] brackets
| vertical bar
\ backslash
: colon
; semicolon
" quotation mark
' apostrophe
<> angle brackets
, comma
. period
? question mark
/ slash
Exchange 5.5 computer nameConnection agreement; mail flow. period
E-mail domain fieldSMTP connector~ tilde
` grave accent
! exclamation point
@ at sign
# number sign
$ dollar sign
% percent
^ caret
& ampersand
* asterisk
() parentheses
+ plus sign
= equal sign
{} braces
[] brackets
| vertical bar
\ backslash
: colon
; semicolon
" quotation mark
<> angle brackets
, comma
. period
? question mark
/ slash
Domain Name System (DNS) namespaceRunning the Setup program_ underscore
Smart host nameSMTP Leading spaces or trailing spaces
Recipient policy SMTP addressViewing public folder hierarchy~ tilde
` grave accent
! exclamation point
@ at sign
# number sign
$ dollar sign
% percent
^ caret
& ampersand
* asterisk
() parentheses
+ plus sign
= equal sign
{} braces
[] brackets
| vertical bar
\ backslash
: colon
; semicolon
" quotation mark
<> angle brackets
, comma
. period
? question mark
/ slash
Recipient policy SMTP address host nameMail Flow.. two periods
Host name of connector address spaceMail Flow.. two periods
Recipient nameSMTP' apostrophe
" quotation mark
Exchange Server host nameSMTP_ underscore
Organization internal directory nameDirectory~ tilde
` grave accent
! exclamation point
@ at sign
# number sign
$ dollar sign
% percent
^ caret
& ampersand
* asterisk
() parentheses
_ underscore
+ plus sign
= equal sign
{} braces
[] brackets
| vertical bar
\ backslash
: colon
; semicolon
" quotation mark
' apostrophe
<> angle brackets
, comma
. period
? question mark
/ slash
Site internal directory nameViewing the public folder hierarchy? question mark
() parentheses
* asterisk
Mailbox nameRunning the Setup program/ slash
Public folder tree namePublic folder viewing or public folder creation: colon
; semicolon

References

For additional information about unsupported characters in Exchange Server 5.5, click the following article numbers to view the articles in the Microsoft Knowledge Base:
259282 How to remove accounts with invalid characters
193842 DXA does not handle MAC mail addresses in excess of 10 characters properly
244413 Cannot reply to e-mail from MEMO because originator address is MEMOGWY(SNADS)
For additional information about unsupported characters in Exchange 2000 Server, click the following article numbers to view the articles in the Microsoft Knowledge Base:
329607 You can join an Exchange 5.5 site that has an invalid character in its name to an Exchange 2000 organization
289671 Invalid character error occurs when you upgrade or join an Exchange Server 5.5 site
316061 The SMTP connector returns an error message when invalid characters are used
251951 Exchange System Manager does not verify smart host DNS names
266311 Workflow common script file must be saved as Unicode
311117 "Recipient names cannot have quotes" error message occurs if you use Web Scheduler
884110 Mail flow stops working after you create a new recipient policy or after you configure a connector in Exchange 2000 and in Exchange 2003
822588 You receive a "The object is no longer available" message when you expand Public Folders in Exchange System Manager in Exchange 2000 or in Exchange 2003
836563 You receive a non-delivery report after you send an e-mail message to an Exchange 5.5 recipient
291266 Cannot create ADC Connection Agreement if there is a dot in the Exchange Server 5.5 computer name
For additional information about unsupported characters in Exchange Server 2003, click the following article number to view the article in the Microsoft Knowledge Base:
821757 An event sink that is registered against a mailbox does not work in Exchange Server 2003

Properties

Article ID: 841091 - Last Review: September 3, 2013 - Revision: 2.0
Applies to
  • Microsoft Exchange Server 2003 Enterprise Edition
  • Microsoft Exchange Server 2003 Standard Edition
  • Microsoft Exchange 2000 Server Standard Edition
  • Microsoft Exchange 2000 Enterprise Server
  • Microsoft Exchange Server 5.5 Standard Edition
Keywords: 
kbinfo KB841091

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