[Dovecot] Dovecot-lda/deliver - how to deliver root's mail?

There's a good chance I could be missing something obvious here, as I can't find much documentation on the LDA other than on the wiki, which is sparse. Local mail delivery works for normal users, but when attempting to deliver mail for root I get this error:

Jan 30 13:42:50 apollo deliver: Running as root isn't permitted

Both sendmail and dovecot run as root on my server - since I don't allow shell accounts and have multiple layers of security around the server I'm okay with that. How can I tell dovecot-lda it's okay to deliver root's mail as root?

Thanks, Shayne