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I just read that wiki page describing it and I think I got domainkeys at least.
It basically creates something similar to an MD5 hash of your email so that receiving mail servers can check it against the sending server. No match and the email is probably fraudulent.
So, if I have it right, this does not decrease the amount of spam you get but does help other servers to not get bogus email from you. Of course if everyone turns this on then this will help everyone not get spam from others.
If I am correct then 1 big question comes to mind right away. What if you use your ISPs outgoing server to send email but use your domains address? Will your email appear fraudulent to the receiving server? Will it look like your email did not originate on the server that the email address is from?
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SH100 , SH131 & SH124
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