PC Win: Err Msg: Undeliverable MailLast reviewed: June 4, 1996Article ID: Q119527  | 
	
	
 
The information in this article applies to:
 
 SYMPTOMSWhen you send mail from the Windows NT Mail client to another Microsoft Mail postoffice using a custom address with lowercase characters in either the network or postoffice name, you receive the following error message: 
 Undeliverable MailThis applies to build 528 and earlier versions of Windows NT. 
 RESOLUTIONType the network name and postoffice name in uppercase characters. 
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	Additional reference words: 3.20 
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