Sentence:  If the <WSD>site</WSD> is forced to send a mesage against its will,...we make the <WSD>site</WSD> go to an error state, and remain there. Note that the <WSD>site</WSD> can fail for other reasons. 
Meaning of the word marked with <WSD> tags:  A computer installation, particularly one associated with an intranet or internet service or telecommunications.