It seems that BATV/PRVS is becoming more and more common in our incoming 
mail stream.
http://www.exim.org/exim-html-current/doc/html/spec_html/ch40.html#SECTverifyPRVS

Currently it appears that a signed return path is a rarity in UCE, 
however as we all know it's probably only a matter of time before that 
changes.

So my question is, and I'm strictly looking for personal opinions here; 
Are callout/callback verifications on the envelope sender when that 
sender is signed more acceptable than just doing them in general?  I 
know SCV in general is a hot topic, I don't wish to rehash it's good/bad 
points, just wonder it people whom are generally against it would be 
more amiable if it was only done one signed return paths.

--
Bryan Rawlins
OnlyMyEmail, Inc.

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