From: Matus UHLAR - fantomas <uh...@fantomas.sk> Still no practical difference between using IP ranges or rdns in SPF.
On 28.01.17 14:27, David Jones wrote:
Most SPF records published are not like this.
so... what?
Seems to me like Yahoo doesn't have a good list of IPs so they took this shortcut which is technically legitimate but it's making up for their incompetence not having a handle on their mail flow.
That doesn't mean incompetence. using PTR is official way, and while not so often used, it's perfectly valid. The whole fact you want their IP ranges does not mean they are not competent when they don't publish them in SPF. the fact that you can't whitelist their IPs based on their SPF record does not mean there's anything wrong with the SPF record itself... -- Matus UHLAR - fantomas, uh...@fantomas.sk ; http://www.fantomas.sk/ Warning: I wish NOT to receive e-mail advertising to this address. Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu. Linux - It's now safe to turn on your computer. Linux - Teraz mozete pocitac bez obav zapnut.
