On January 4, 2011 07:36:27 am Lamar Owen wrote: > In my case, our primary e-mail server is Scalix, so that dictated the > storage format. But, honestly, I personally would love to use a > PostgreSQL backend so that real concurrent access is possible; dbmail with PostgreSQL works really well. I moved a Maildir + Courier setup to it when backups got too painful. It does require a fair bit of RAM, but PostgreSQL compresses text data and dbmail works to dedupe messages and especially attachments.