[Meng Weng Wong]
[Andrew G. Tereschenko]
| So? SPF records change are non-trivial process that can take up to
several
| days.
| Even expirienced DNS administrators can forget about mail queue
messages.
Yes. Life is nontrivial.
Completely agree.
But IT/CS must simplify your life, not complicate it.
I prefer to update my MTA software once and forget about it for years.
I dislike idea to not visit Hawaii because of requirements to keep SPF
filters updated ;-)
Even more - SPF are not suitable for FidoNet-like offline email systems in
developing countries.
Take Africa as example. There is no established and static mail routing
architecture. Ad-hoc connections are common.
There is even more non-traditional Bus-Net (Floppy Net-like) email delivery
systems already prototyped that can use busses (dogs, horses, birds etc..
;-)
It's not possible to configure network links for African village. Radio or
satellite is expensive. But computers usage is possible - power generators
are cheap.
Buses regularly visit this village and can deliver emails to/from at no
additional cost.
For example they can use it to access Internet http://www4mail.org/
DomainKeys with user/village tokens will make it possible to identify email
origin.
But SPF requires development of additional technologies.
--
Andriy G. Tereshchenko
TAG Software
Odessa, Ukraine
http://www.24.odessa.ua