Hi John, > Do you? In the way I tried to express it, yes. Gmail recently said that the selector, or the change of the selector, can have a role in their anti-spam and reputation system. Just because it's an element of the email, and that it can indicate something. It is not used for _reputation_ in its purest, simpliest form (value of d= is good, value of d=is bad), but it is one of the thousands thinks that might have a non-null, even if negligible, weight in the whole system. Soooo, technically,an ISP's scientist or even just tech guy, won't say that these elements are not part of the reputation system. But the public should understand "nope, they're not". I don't know if the other main ISPs include s= or other things in their decision system, I believe they do. Maybe tomorrow they won't. And the day after tomorrow, they will again.
That being said, the main point is that if you have deliverability issues, probably related to the reputation of a domain name, the incidence of s= or the public key are not the first things to worry about. Lack of consent, irrelevant content, bad list hygiene and too much communication pressure are by far the first causes of problems. Cheers, -- <https://www.splio.com> Benjamin 2017-10-10 10:56 GMT+08:00 John Levine <jo...@taugh.com>: > In article <CAJGB_dF0U7dLCtVbU8q0BvhHUpf-72Bq=2tRx07_PVL82nNqNQ@mail. > gmail.com> you write: > >ISPs might consider the change of s= or key as an element being part of > >their reputation systems and metrics. > > If they do they are egregiously failing to do what the DKIM spec says > they should, and I don't know any ISP that does that. > > Do you? > > It is crystal clear in the spec that selectors are for key management, > not reputation. If you want mail streams with different reputation, > use different subdomains in the d= tag. > > > R's, > John >
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