[Dovecot] Deliver Root Setuid

Hi, I just configured my Postfix installation to deliver via Dovecot LDA. But because I use separate uids for virtual domains I had to set deliver to be setuid root. Altough I find this as frequent answer to this problem with deliver LDA I am not a 100% sure - basically because I try to avoid root setuids as much as I can.

What should be better solution - to have all mailboxes with one owner or this setuid binary?

My main reason for separate uids was filesystem quotas for whole domain. But my mail partition resides on XFS so I can do the same with directory quotas and I also noticed changes in quotas which should be also per domain in some next release or with patch.

Thanks for any advice and also thanks for all great work on Dovecot.

        Láďa