Best Practice for Multi-Domain Bounce Handling in Listmonk with Multiple SMTP Servers?

[RealEstateSaga]

Greetings -

have a Listmonk setup with 4 separate SMTP servers, each sending from a different domain (Domain A, B, C, and D).

Since Listmonk only allows one bounce mailbox to be configured in Settings -> Bounces, I am looking for the standard configuration to handle this.

Centralized Mailbox: Is the best practice to set up bounces@domainA.com as the master, and then forward all email from bounces@domain[B,C,D].com to that master account?

Custom Headers: For the individual SMTP servers in Listmonk, should I add a custom Return-Path header for each domain so the mail servers know where to send the bounce?

Example: For SMTP Server B, would I add [{"Return-Path": "bounces@domainB.com"}]?

How do high-volume users typically handle multiple sending domains to ensure the "Bounce Reaper" cleans the main database correctly?

Thank you!

[knadh]

Yes, you can setup a centralised inbox and set the Return-Path header to land all the bounce e-mails there.