KumoMTA internal: failed to connect to any candidate hosts: tls policy is Required but STARTTLS

so I’m gonna try that first

thank you so much for your help. I should’ve tested directly first, I just assumed it was a bad config on my part with Kumo

No worries.

it’s not the EHLO. Anyways, if I figured it out I’ll pass it along, never seen something like this before

I’m asking over on the DSN Slack to see if anyone there has seen it.

ty