email infrastructure used to relay spam?

I’ve received some unusual spam email from “”.

Normally I’d think nothing of this, but it appears to have a valid DKIM signature, and has passed SPF.

If I’m reading the headers correctly, it appears to have been forwarded by “” and possibly “”.

Can someone suggest a good point of contact for further investigation?


I believe this was an internal error. This tweet from Mozilla should help clarify matters: