[Dovecot] Pigeonhole proxy errors

[Cassidy Larson]

> But you haven't done that to managesieve-login. If you already have
> dovenull user, you should be using it in those (just remove the user=
> lines). Hmm. Maybe your v1.x config used an explicit
> "login_user=dovecot" and that got converted automatically?..

yes. that was it. I removed the user = dovecot from those sections and
now managesieve responds with capabilities as expected.

Thank you!