[exim] CSA usefulness

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Author: Mike Cardwell
Date:  
To: Exim Users List
Subject: [exim] CSA usefulness
Hi,

Does anyone here use CSA to reject or score on incoming email? Does
anyone know of any large mail providers that actually have CSA SRV
records in the DNS? I'm just wondering if it's worth spending time
playing with. My gut feeling is there are too few people using it
currently for there to be any point, but I just wanted clarification.

Thanks,
Mike