u/IJsdraakje

I've been searching, but I can't find a similar case, I hope someone knows how this happens!

I've had a firstname.lastname@ for decades and for some reason I'm suddenly getting initial.lastname@ incidentally as well (think jane.doe for minde and j.doe for theirs). I've never registered or connected an initial.lastname and their first name doesn't resemble mine in the slightest. I've tried emailing them, but the mail just landed in my own mailbox, even with typing the address myself.

Any idea what might cause this?