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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 just a host name or IP address, but if you need to add a port number, username and password, or SMTPS instead of SMTP, you can specify a valid SMTP URI, such as:

 [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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