Bounce and Reputation Recovery

Something has gone wrong and the instinct is to keep sending and hope it settles. It won't. Every additional message sent into a reputation problem makes the problem worse, and the recovery longer.

Stop sending first. Diagnose second. Resume slowly third. In that order, every time.

Stop

Immediately, on the affected domain and every mailbox on it. Not "reduce volume", not "pause the worst campaign". Stop.

This is the hardest step to get agreement on because there's usually a pipeline target attached to the sending. The argument that works: the domain is an asset that takes four weeks to build and can be lost in two days, and continuing to send is spending it.

Diagnose

Establish which problem you have, because the recovery differs.