I'm wondering if anyone here has had experience using authmysql, authpgsql, and authldap with Courier, and who would be willing to share your experiences about which one has been most efficient for you. I'm talking strictly about run-time reliability and efficiency, given that I'm quite capable of configuring and administering each of these.

I plan to use one of these three within Courier for a medium-sized email setup on a machine that might be slightly weak on resources, and therefore, I'd like to pick the one that will have the lowest run-time impact without jeopardizing reliability.

Thanks in advance for any thoughts you might have about this.