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List:       postfix-users
Subject:    Re: Preferred/maintained greylisting options?
From:       Patrick Proniewski <patpro () patpro ! net>
Date:       2020-05-25 12:27:18
Message-ID: 09219EE2-3569-45A3-9E57-4B951568F08A () patpro ! net
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Hello,

> On 25 mai 2020, at 03:59, Vincent Pelletier <plr.vincent@gmail.com> wrote:
> 
> On Fri, May 22, 2020 at 5:43 AM Ralph Seichter <abbot@monksofcool.net> wrote:
> > Yeah, delays... Used to be people understood the difference between
> > asynchronous messaging (i.e. email) and instant messaging. Nowadays it
> > seems that no day goes by without somehing along these lines:
> > 
> > "Hi. We have not seen you login using this browser, this IP address or
> > during this week. Therefore we have just sent you an email containing
> > a verification code, which will remain valid for 10 minutes."
> 
> Personally, I've hacked together a mixed SPF check + greylist milter.
> If SPF check passes, the greylist is skipped, and any other result
> ("do not reject any mail" approach modulo greylisting) goes to greylist.
> The companies which send such emails are likely (in my experience)
> to have a properly setup SPF, so this solved these issues for me.
> 
> I'm not planning on releasing the source, it's really an ugly milter, but
> I'm putting the idea out here - and maybe I'll learn it has already been
> done and properly implemented...


I've been using milter-greylist for a very long time, and it does natively support \
for years a "nospf" config flag that will allow you to skip greylist when SPF \
verification if good. You don't need to hack anything ;)

patpro=


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