Re: Macros for collecting SPF queries against your SPF record.

William Leibzon wrote:
> Good idea.
> 
> I'll just quickly note that some of us here may not trust SPF enough to 
> put "-all" because it may end up blocking some of legit emails coming
> through forwarders (isn't it also part of what we're trying to determine 
> too, how effective it is and how many false positives may happen because 
> of its use).
> 
> So I'd recommend that those that do not currently publish SPF record
> that want to participate in this test, do with "+all" at the end
> (instead of "-all")

That's the wrong thing to put at the end. An SPF record equivalent to 'no 
record published' would be 'v=spf1 ?all'. Having +all at the end is an 
explicit statement that mail from this domain legitimately comes from 
anywhere on the Internet.

Phil