Outbound Email Relay

March 26, 2020 Contributors

When configuring Momentum as an outbound e-mail relay, you must take care to not expose your system to abuse by allowing unauthorized machines to send e-mail to domains for which the local instance does not provide mail service. Doing so makes your system an "open relay." Only trusted machines should be allowed to connect and inject mails. The relay_hosts option controls this setting. For details, see relay_hosts.