Gmail Mail Delivery Subsystem Being Used for Spam Delivery Bypassing Filters (old.reddit.com)

Checking to see if this is happening to anyone else. This is a clever tactic where spammers are exploiting the GMail mail delivery subsystem with a return path to a legit GMail address to have the subsystem deliver the original spam message as an attachment to the recipient.

Yup happens on a daily basis

This will be solved as soon as someone figures out a way to get a promotion out of it