I run a domain for our community association. I had an “ethical hacker” discover that I had neglected to set up spf records for that domain. I had to deal with him sending a bunch of nasty emails to our other board members after I refused to pay him for his “discovery”. (Actually I offered him a cut of my salary as a board member, which at $0, came out to be… less than he was hoping for) I’ll definitely keep a link t…
The annoying case is when you have them correctly configured but are using ~all instead of -all so you still need to deal with the beg bounties.