Bounce Address Tag Validation (BATV)
Bounce Address Tag Validation (BATV) checks incoming messages for valid bounce address tags. If a tag is missing, it takes the action you specify.
When you turn on BATV and configure an action for existing domains, BATV applies that action to bounces received for messages sent before it was turned on. To avoid deleting valid bounces, we recommend you set Quarantine, not Delete, as the action for the first week after you turn on BATV. You should also do this if BATV is turned off and later turned back on.
BATV protection applies to every inbound bounce message. A bounce message is a message with no sender shown in the SMTP From field and contains content-type: multipart/report; report-type=delivery-status.
Click a domain in the Domains Settings/Status page to see its BATV status.