HTTP sending fails: The server committed a protocol violation - BizTalk 2009 Forum - BizTalk 2009

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Hello

I am sending from one BizTalk 2009 instance to another via HTTP a message (using IIS 6.0). Both instances are located on different servers in different subnetworks. On the source BizTalk there is a simple orchestration, which transforms the input File xml and sends it via HTTP. On the destination BizTalk there is only one configured HTTP receive port. Port 80 on the server is configured in Firewall. Source BizTalk is german, destination BizTalk is english.

The following error occurs: "The server commited a protocol violation. Section=ResponseStatusLine".

At the destination BitTalk there are no errors in the machine log, only in the IIS log there is an error 400.

What should I check out / configure to solve the issue?

The problem is, that BizTalk destination instance is configured on example of another one which functions.

BizTalk source can succesfully send the same test message to this functioning original BizTalk instance.

Thanks a lot for Your help / ideas!