I need some help clearing up the differences between sender id and spf: Here is what i know:
1. SPF "Validates" that domain ip 22.214.171.124 can send from domain xyz.com -all (and more)
whch is basically verifing that the route the message took is correct.
2. That email address ending in @xyz.com can send from that domain.
(The spf part i get)
Sender ID... I dont get the PRA aspect of Sender ID. I read this page: http://www.openspf.org/blobs/spf-community-position
but am not clear on it. IT seems that on one hand PRA is checking a different part of the message but its not sure?
or its checking the mfrom but isnt that checked by the spf records?
Please Provive as much explained detail as you can...