> On 18 Aug 2017, at 16:25, Tom Browder <[hidden email]> wrote:
> I'm reading about some conflicting opinions of the spf record (via a
> TXT record) and wonder if there is a consensus view among the postfix
I fail to see anything in that article that would reach the level of a
"conflicting opinion". Even Wikipedia's "Controversy" subheading is
stretching the point. "Limitations" would be closer to the mark.
Is your point that SPF is not a perfect solution? Because pretty much
everybody who uses it knows that and always has.
I was unaware of the controversy. I can tell you that for the specific example given :
(For example, a person who uses their home ISP's SMTP servers to send mail with their work email as the address.)
I was for years tagging and delivering on SPF failures with my appliances. Just recently I added filtering with a cloud appliance before my physical appliances and that only allows blocking on failures. So now I live with it.
I thought you had a problem you were trying to solve?
I learned about the limit of lookups being 10 and had to fix my TXT record and how some/all appliances can't deal with multiple TXT records for SPF, so I need one in DNS with multiple includes....
Anyway, good luck in finding the sweet spot.
Operating Systems Programmer / Analyst
University of Connecticut, UITS, SSG, Server Systems