Hard Bounce to All AOL and Yahoo

[perrylawrence]

Since a few days ago we have been getting a Hard Bounce from all AOL and Yahoo emails we send to.

Error is: 

Hard bounced (Policy)

Rejected by recipient's email security filter

POLICY 554 5.7.1 [MW01] Message content not accepted for policy reasons; see https://**bleep**.verizonmedia.com/error-codes

(bleep = post master)

The emails have all previously worked with a list of 10k getting less than 1% bounce.

Now all our emails get shut down when bounce rate goes over 10%, which it does every time now.

Our email sending domain is connected.

[Ben_M]

I would raise this issue with support and open a ticket.  Hubspot will need to look into this.