Configure your MTA

There are two ways to connect your MTA to DBMail. The MTA can start a dbmail-smtp process and pipe SMTP commands and messages to it, or it can use lmtp (Local Mail Transport Protocol) to deliver via dbmail-lmtpd. LMTP is the preferred solution because it offers more robust error handling and because it is a daemon, high traffic servers will have reduced delays which would be incurred starting up a dbmail-smtp process for each message.

If you use a different kind of mta that we do not have documentation for: The dbmail injector program, dbmail-smtp, can receive information in two ways. Either through raw mail (for example, delivered by procmail) using the -n option or from a MTA with recipients in the commandline using the -d option. Be carefull, the -n option is not fully tested and may behave unexpected. If possible use the -d option.

Setup for LMTP should be straightforward if your MTA supports it.