KumoMTA to PowerMTA TLS Authentication Issue

get-help
1

I’m setting up KumoMTA to forward emails to PowerMTA with TLS authentication.

Previously, I could route emails to a specific SMTP server. Now, TLS authentication is failing because PowerMTA has global TLS settings, not individual connection-based settings. This mismatch is causing connection errors.

My question is: Can KumoMTA be configured to choose a specific TLS authentication method for each SMTP connection to PowerMTA?

This is my config: opt/kumomta/etc/policy/shaping.toml
[“smtp-30.domain.com”]
enable_tls = ‘Required’
smtp_port=4032

2

Hey there @winsome-lion, thanks for posting. Please read the “Troubleshooting” and “How to Ask for Help” buttons below. If you would like a 1:1 support session from the KumoMTA team, details are at the “Book a Support Session” button below.

3

Can you be more specific? What TLS setting are you looking to configure based on the remote host?

4

And how is the “global TLS setting” mis-match causing errors?