Please correct me if I am mistaken, but it appears that SPF
supports the ability to set different rules on different
subdomains (sub.domain.tld).
SPF has nothing to do with reputation.
This only matter how your reputation provider will assign reputation to domain
name.
Reputation can be assigned based on phases of Moon or based on google.com
search.
P.S> You have cool web-hosting with 100GB/month.
How about creating RSS feed for your infinite number of ideas and avoid posting
them here ?
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Andriy G. Tereshchenko
Odessa, Ukraine