4. The method of claim 1 , further comprising making a comparison between at least a portion of the message and a first entry in a lookup table in the memory, and employing the first entry in said determining that a first portion of the memory is associated with the message.
4. The method of claim 1 , further comprising making a comparison between at least a portion of the message and a first entry in a lookup table in the memory, and employing the first entry in said determining that a first portion of the memory is associated with the message. 7. The method of claim 4 , further comprising employing as the at least a portion of the message a hash of at least a portion of a subject of the message.