> Thanks Chris.
> Can you please suggest some documentation on running a second daemon
> only for outgoing messages?
I'm afraid that there's not going to be simple documentation for this.
It will require custom-written configurations and so on.
> We have squirrelmail for receiving mails from local users. Is it
> possible to ratelimit mails in this environment?
It depends on how your squirrelmail is configured. Our local
squirrelmail installation is set up to send all submitted mail
via SMTP to our general submission server, so I know that it's
at least possible.
- cks