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Configuring Relaying

There are several situations in which you may not want your Citadel server to deliver mail directly to recipients over the public Internet. These include:

If this is the case, you can relay all outbound mail through a smart host. You can configure a smart host two ways:

You can specify any valid SMTP URI. At the very least, you must specify a host name, but if you need to add a port number, username and password, or SMTPS instead of SMTP, these options are all accepted. The full URI syntax is:

 
 [smtp[s]://][username:password@]host[:port]

If you configure multiple smart-hosts, one will be selected at random for each message that is delivered.

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