loren wilton voxhqbdearthlinknet ive sa man pages etc cant find description rule matching answers question one header certain type exists rule requiring negative match count per email per header headers name concatenated single header rule match believe sure whether headers separated newlines string merely spaces received headers specifically also number metaheaders built sa appear message used rule matching break headers trusted untrusted etc format headers think little different thant normal received headers format documented somewhere havent looked loren thu 07 aug 2008 124721 0800 technical question header rule matching