I suppose we all see what we want to.
I see politics rather than technical discussion.
Of course it's political. We can have all the technical discussions
we want about the likely effects of LMAP and various ways to work
around or limit the damage it causes. The decision about whether it's
worth the cost of redefining the message bounce address as a sender
address and adding IP based verification goop for that address is a
political one, not a technical one.
I see people who don't want to implement LMAP trying to prevent
others from implementing it.
Could you explain in detail how you're prevented from implementing
LMAP? If you want to publish data for SPF, RMX, CLID, or anything
else, you can do so. If you want to filter or reject mail based on
its bounce address or HELO domain matching LMAP data, you can do that,
too.
In the other direction, my wife uses an alumna address at
cornell.edu but sends mail from here.
And to ask my perennial idiotic question: How does the recipient
tell that the message is valid?
The same way they have for the past 20 years, I suppose. How do you
tell that messages from this list are valid? If you can't, how can
you bear to accept mail from it?
Regards,
John Levine, johnl(_at_)taugh(_dot_)com, Taughannock Networks, Trumansburg NY
http://www.taugh.com