[Mailman-Developers] Fixing DMARC problems with .invalid munge

[Tanstaafl]

On 5/21/2014 12:14 PM, Ian Eiloart <iane at sussex.ac.uk> wrote:
> And, it’s not abusive if appropriate SPF checks are done first:
> obviously, you don’t do the callout if you get an SPF fail. A callout
> with an SPF pass isn’t abusive: if the domain sent me an email, then
> it should be able to handle a callout.

You are wrong.

Minimizing the use of SAV is always best if you are going to use it, but 
you should only use it with sites that you have an understanding and 
agreement in place where they formally tell you its ok.

Anything else is, indeed, abusive, regardless of your personal opinion 
on the matter.