3.4  Setting connection to the Internet and to the SMTP server
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3.4  Setting connection to the Internet and to the SMTP server

Anyone can connect to the SMTP server to send messages to local domains. Sending of messages to other domains will be restricted to local users only. Users connected from the Internet will be prompted to authenticate on the SMTP server by username and password. This setting can be done on the Relay Control under Configuration → SMTP server:

  1. On the tab, enable the Allow relay only for option.

  2. Check option Users from IP address groups and select the Local Clients group which includes all private ranges of IP addresses.

  3. Enable option Users authenticated through SMTP for outgoing mail to allow users connected from the Internet send email.

    Note: Authentication against the SMTP server must be set in the email client. Settings of some popular clients are focused in chapter 4.2  MS Outlook settings).

Details on security of the SMTP server can be found in chapter SMTP server of the Kerio MailServer, Administrator's Guide.

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3.3  Setting domain and user accounts Contents 3.5  Antispam control of the SMTP server