Assume that you are using the Minimal Lower Layer Protocol (MLLP) adapter which enables the Microsoft BizTalk Server to receive or send HL7-based messages. When you configure the BizTalk Server MLLP Receive's localhost property to 0.0.0.0 to listen on all local interfaces, and then click OK, you may receive an error message that resembles the following:
"The requested Host name is Invalid"
This issue is fixed in the following cumulative update for BizTalk Server:
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For information about the service packs and cumulative update list for BizTalk Server, click the following article number to view the article in the Microsoft Knowledge Base:
2555976 Service pack and cumulative update list for BizTalk Server
For more information about BizTalk Server hotfixes, click the following article number to view the article in the Microsoft Knowledge Base:
2003907 Information about BizTalk hotfixes and Service Pack support