Re: [mailop] SPF recommendations (was: Re: Earthlink trouble with our PTR)

2017-12-15 Thread Al Iverson
You're not wrong. I would only say say that perhaps this makes -all harmless versus something one truly needs to worry about or avoid. There's a lot of past, quite possibly bogus, guidance where we were all pushed as ESP senders to implement -all, given the impression that once upon a time it

Re: [mailop] SPF recommendations (was: Re: Earthlink trouble with our PTR)

2017-12-14 Thread Jim Popovitch
On Thu, Dec 14, 2017 at 8:07 PM, Bill Cole wrote: > On 14 Dec 2017, at 14:01 (-0500), Jim Popovitch wrote: > >> Aside from a few HUGE providers, those with very large and disparate >> networks/offices/topology > > > SPF isn't related to the complexity

Re: [mailop] SPF recommendations (was: Re: Earthlink trouble with our PTR)

2017-12-14 Thread Bill Cole
On 14 Dec 2017, at 14:01 (-0500), Jim Popovitch wrote: Aside from a few HUGE providers, those with very large and disparate networks/offices/topology SPF isn't related to the complexity of a network, but control of users using a domain name, which is a very different thing. -all means

Re: [mailop] SPF recommendations (was: Re: Earthlink trouble with our PTR)

2017-12-14 Thread Brandon Long via mailop
My point is that -all is policy, and most people ignore the policy portions of SPF because it completely fails a lot of forwarding cases. -all is asking receivers to reject mail that doesn't pass. ~all isn't policy. In practice, very few receivers implement SPF policy (except -all by itself for

Re: [mailop] SPF recommendations (was: Re: Earthlink trouble with our PTR)

2017-12-14 Thread Al Iverson
On Thu, Dec 14, 2017 at 2:14 PM, Brandon Long via mailop wrote: > > On Thu, Dec 14, 2017 at 11:09 AM Jim Popovitch wrote: >> >> On Thu, Dec 14, 2017 at 11:33 AM, Vladimir Dubrovin via mailop >> wrote: >> > >> > In fact, you should not use

Re: [mailop] SPF recommendations (was: Re: Earthlink trouble with our PTR)

2017-12-14 Thread Brandon Long via mailop
On Thu, Dec 14, 2017 at 11:09 AM Jim Popovitch wrote: > On Thu, Dec 14, 2017 at 11:33 AM, Vladimir Dubrovin via mailop > wrote: > > > > In fact, you should not use "-all" for your mail domain if you care > > about deliverability. > > FALSE! (Also, you

Re: [mailop] SPF recommendations (was: Re: Earthlink trouble with our PTR)

2017-12-14 Thread Jim Popovitch
On Thu, Dec 14, 2017 at 11:33 AM, Vladimir Dubrovin via mailop wrote: > > In fact, you should not use "-all" for your mail domain if you care > about deliverability. FALSE! (Also, you should not randomly add CC recipients to the same mailinglist that you are responding to)

[mailop] SPF recommendations (was: Re: Earthlink trouble with our PTR)

2017-12-14 Thread Vladimir Dubrovin via mailop
> If you want to be a good neighbour, you should have a restrictive (not > ~all) SPF This is quite common misconception. In fact, you should not use "-all" for your mail domain if you care about deliverability. You can find this fact and many more SPF misconceptions explained here: