FC> We trying to decide on a new MTA and have taken a look at DbMail. DBMail isn't an MTA - it uses other programs (Postfix, qmail, sendmail) as the mail transport layer. It DOES handle the functions of handling the mail boxes themselves, including providing POP3 and IMAP4 interfaces.
Personally, I use Postfix for the MTA, because we never got qmail to work properly. FC> Is it possible to get a list of companies who are using DbMail in FC> a production environment. (Company, Mailboxes, #of mailserveres, FC> #of virtual domains). We use Postfix + DBMail + MySQL for handling about 30 domains, 50 users, spread over two sites (a third scheduled in a month or so), and 3 (soon 5) mail servers. Load is about 500 incoming messages per day (automated processed generate more outbound, but that's not any concern of DBMail's). The reason for extra servers in our case is different spam filtering needs between domains - Some of our domains require that we NOT block Costa Rica and other south/central American spam sources, because they have customers in those areas, while the majority don't want the extra spam. I would guess we were one of the first outside the development team to "go live" with DBMail, having brought it online for all but one domain over Christmas 2001. Our reasons were the ability to manage more users than we wanted to assign system accounts for, for security reasons. Plus, the combination of Postfix with MySQL support and DBMail allow me to add a new domain to our system with two lines of SQL. FC> We would also like to know of any performance statistics using FC> DbMail wit a lot of virtual domains/mailboxe. Our system hardly notices the small load we put on it, even though we only have 500MHz single-CPU systems, which are also acting as web servers. We DO have the SQL server on its own dedicated box, but, again, it's just a 500 MHz K6-2. I'm sure others, who have thousands of mail users, will report their findings. However, handling virtual domains is not a problem - in my configuration, the virtual domains are simply another SQL table, so Postfix does a simple look-up to determine how to (and whether or not to) handle any given inbound message. DBMail doesn't really care about virtual domains, either - it's just doing a look-up on the inbound address in its alias table, to get a final destination. -- Jeff Brenton President, Engineered Software Products, Inc http://espi.com Questionable web page: http://dididahdahdidit.com Liberalism grants you the freedom to advocate any idea*. * Please see http://www.dididahdahdidit.com/except.php for a current list of exceptions
