In post_info.asp line 1852 (in sub DoAutoMoveEmail(TopicNum)):
strMessage = strMessage & "..." & vbNewLine & _
Left(Request.Form("refer"), InstrRev(Request.Form("refer"), "/")) & _
"topic.asp?TOPIC_ID=" & TopicNum & vbNewLine
(code is divided into lines to prevent horizontal scroll)
The calculation should result as strForumURL. Can there be any other case that I'm not aware of?