hi, According to [1] (3.4.7) smtp headers should handle case independent maner.
i.e. it should be able to process if a message comes with an 'in-reply-to' header. to do this I would like to change the header names to lower case before adding to the map and make all the constant field values to lower case. [1] http://www.w3.org/Protocols/rfc822/ -- Amila Suriarachchi WSO2 Inc. blog: http://amilachinthaka.blogspot.com/