Bounce message remove from spool on first attempt

KumoMTA Configuration
1

Hi Team,

I need assistance regarding the configuration below.

The requirement is to ensure that if a bounce message is received for a specific tenant, the message should be immediately dropped from the spool, and no retry attempts should be made.

For example, if a message with ID “msg-1” receives a 4XX response, it should not be placed in the transient failure queue. Instead, it should be dropped immediately, and no further retry attempts should occur.

Please let me know the correct approach to achieve this behavior.

2

This exists. You can “transcode”, or rewrite any 4xx to a 5xx with this, and it will turn it into a bounce and not respool: