No Nethserver email via Nextcloud Mail app

[mrmarkuz (Markus Neuberger)]

Please try the following to set ACLs for public folder and then try again to configure Nextcloud Mail.

doveadm acl set -A Public authenticated lookup read

I found another thread about the Nextcloud error and I think @thorsten is right here:

Nextcloud mail app config error

Hi, I am not shure, but for my feeling, it has something to do with this here: -> Maybe the forbidden ACL leads to the same error, however with a larger impact on the nextcloud client. I am more and more convinced that may be solved on the Dovecot level. Maybe it could be worth giving a try to alter devecot ACL. Best regards Thorsten