Just upgraded to v69a on my Home hosted (VDSL2 80/20) and VPS MIAB and all works.
Thank you @JoshData and all the other contributors to this project
The older setup of MIAB still throws up the ERROR related to Nextcloud: Error: stepping, UNIQUE constraint failed: oc_users_external.uid, oc_users_external.backend (19)
and I know it has been discussed here, but I just did not have time to try fixing it โฆ
โ A new version of Mail-in-a-Box is available. You are running version v69a. The latest version is v**69b**. For upgrade instructions, see https://mailinabox.email.