Configure retries based on bounce classification

KumoMTA Policy
1

Hello,

I was wondering if it’s currently possible to configure max number of retries, max retry interval & base retry interval based on the bounce_classification

My use case is this :

Let’s say i have a bounce of classification QuotaIssues i wouldn’t want to retry 5min after first attempt, but maybe a day later, and doing only 2 attempts

But if i have a GreyList bounce, i may want to retry sooner than the QuotaIssues bounce & doing more attempts

Could this be possible currently in KumoMTA ? I tried to look around in the documentation and didn’t find anything

Thanks for your help

3

Configure retries based on bounce classification

4

So here’s the thing, TSA is doing traffic shaping automation, and shaping is about the behavior of the Ready queue. Retry interval is a Scheduled queue property, and it applies at the queue level. Because of that you’re not going to find a solution in TSA for this.

BUT…

You could possibly create a secondary Scheduled queue with your anticipated configuration, then load the message into that queue based on the bounce you encountered, using requeue_message - KumoMTA Docs

But I haven’t tested that use case and am only theorizing, but it could be a path forward.

5

Alright i see, so inside the requeue_message event, with the message object, do we have access to the bounce_classification ? Or do we only have the smtp_response part ?

6

You have smtp_response