if you're having trouble with your domain. I don't know how many bounce backs you get, so it's up to you, but I don't think a lot of individuals are aware of this possibility - I'm sure businesses are.
About the controversy, read the 5th paragraph here http://www.openspf.org/SPF_vs_Sender_ID
~Sovereign
Nowadays is it necessary to have an spf or sender id? I heard that there is a conflict between the two?

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