Gmail Mail Delivery Subsystem Being Used for Spam Delivery Bypassing Filters

13 good_intentions 5 9/17/2025, 3:40:27 PM old.reddit.com ↗

Comments (5)

jdlyga · 3h ago

Yup happens on a daily basis

supportengineer · 3h ago

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

good_intentions · 1h ago

Right?! Some low hanging grapes right here ripe for the promotion track. Something something revenue and total addressable opportunity.

good_intentions · 4h ago

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.

Denatonium · 3h ago

It's been happening to me too. I don't want to flag the messages as spam, as the mail delivery subsystem is doing exactly as it is supposed to, but this is a problem.