[Mailman-Users] Specify different SMTP server

Hi,

Reading previous emails seem to suggest I can make Mailman output to a different SMTP server by changing the options in the configuration files. I would quite like to do this, as currently Mailman is on a server which doesn't do much email, and the Exim on that machine outputs to the destination SMTP server in any case.

My only question is: Is this a common deployment, and what happens if the destination SMTP server is down?

Thanks.

Andrew.