dynamic send port

in the expression shape
DynamicSendPort(Microsoft.XLANGs.BaseTypes.Address) = FromMsg.Destination;

Destinations could be on different protocols as long as the URI is correct. BizTalk will generate “The outbound transport could not be resolved” error if URI couldn't be found. The following are some valid formats.
file://c:\file\Dynamic\Output\%MessageID%.xml
msmq://.\private$\TestQueue
http://orders.mycompany