Managing a Mailserver / Using DBMail

Does anybody here manage a mailserver? If so, have you ever used or considered using DBMail?

http://www.dbmail.org/

Few questions:

[LIST=1]
[]How well does it perform in general?
[
]The overview boasts scalability. Can you confirm w/ real-world situations?
[]The docs suggest not deploying on a machine w/ less than 1gig ram. Could it run decently on a development environment with around 256mb ram?
[
]Any horror stories I should hear?
[/LIST]

Thanks in advance! :slight_smile: