> Brilliant... kill spam!
It might prevent spammers from using somebody elses domain in the
from address. But with the current price of domain names (and the
move of a certain registrar to make updating NS records much more
realtime) what is to stop a spammer from just using a valid from
address from one of the thousands of domains he owns himself, and
with an SPF record that points to any of the infected spam
zombies he has under his control?
SPF won't kill spam in any meaningfull way. It will do a lot of
good for Hotmail in other ways. Since domain spoofing becomes
harder, it will protect the reputation of Hotmail itself. And it
will lock people in to the web interface of Hotmail, because
sending email from your local email client with a hotmail.com
address will be impossible. You will be required to use that
awfull webinterface all the time.
In other ways SPF will do a lot of bad things. It will kill this
mailinglist. You will be receiving email from the IP address of
the HoF server, but the from address is not tudelft.nl. And it is
quite unlikely that the tudelft.nl SPF record will include the
HoF server IP. Result: the email will be rejected.
Jochem
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