>> Google has repeatedly said that they're not going to turn on DMARC >> until ARC is available. > >They already have for google.com <http://google.com/>… gmail is probably a much bigger impact, but I >discovered google.com’s p=reject when we accidentally turned on DMARC enforcement :/ Well, yeah. The domain google.com is used by about 57,000 Google employees while the domain gmail.com is used by about a billion (yes, really) Gmail users. R's, John