@hari nothing to worry about there. When you setup DMARC, it will also ask for an email address to send daily reports to. Google won’t be the only one sending these - you’ll get one from every domain that receives email from yours. Typically, it makes sense to redirect these to an unattended mailbox so they don’t clog up your main mailbox.

@phenomlab Pondering this a bit more I would whittle down that single arrow to uBlock Origin. Avail on both Firefox and Chrome. Lots of respect for it, and author, on many security forums, e.g. Wilder Security.

Which is not to say do not get a VPN.