This will be popcorn time for those using Gmail for business. I have a plugin in Thunderbird that shows the DKIM status of incoming email as gray/red/green, me

This will be popcorn time for those using Gmail for business. I have a plugin in Thunderbird that shows the DKIM status of incoming email as gray/red/green, meaning no DKIM/DKIM invalid/DKIM valid. Most of the email I get from business accounts (usually on Exchange), including those from the company I work at, have no DKIM. (Yes, I've complained to the ITsec dept. They don't even have SPF set up...) Of the rest, surprisingly many have invalid DKIM sigs.