Hello, I just came from the SPF camp. Please don't shoot me. :>) I'm not
an SPF advocate. I'm an electronic design engineer hoping to find some way
to help solve the problems with email authentication.
I really like the way CSV avoids all the complexity in SPF. I'm puzzled,
however, as to why you chose SRV records instead of a free-format TXT. As
I understand it, this limits you to authorizing just one or a few
servers. This seems like the opposite extreme from SPF.
Why not have one query produce a short list of IP blocks that are
authorized to act as mail servers for a domain? Then even a huge domain
like rr.com could give you hundreds of authorized IP servers in one
cacheable record.
For example, to specify 6 blocks of 170 IPs each and 5 blocks of 4 IPs each
you might have a string like:
ip=170(Kapi2RPMcR1CxEJdXOkLCFEC),4(MQDTO0fzuShRvL8q0m5sitIH3)
-- Dave
************************************************************ *
* David MacQuigg, PhD email: david_macquigg at yahoo.com * *
* IC Design Engineer phone: USA 520-721-4583 * * *
* Analog Design Methodologies * * *
* 9320 East Mikelyn Lane * * *
* VRS Consulting, P.C. Tucson, Arizona 85710 *
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