Sometime Today, Dhawal Doshy assembled some asciibets to say:
While its neat for desktops and general browsing, make sure you do not use opendns on a mail server (due to the 'smarter' feature, that'll
IIRC, opendns was made for home users rather than service providers. I've seen speedups and improved reliability when I started using it a couple of months ago (my ISP's DNS servers had conked out).