 Whitelists are lists of email addresses, hosts, and IP addresses whose messages you wish to exempt from a number of security restrictions. Heuristics and Bayesian, DNSBL, DKIM Verification, and almost every other Security feature in SecurityGateway has the option to exempt senders, hosts, messages, and so on if they appear on the appropriate whitelist. Each whitelist can be set as global or domain specific, and, although items are typically added to whitelists one at a time, each whitelist has an import feature, which allows you to use a comma separated values (CSV) file to add multiple items at once. Finally, each list also has an export feature, which allows you to save the contents of the whitelist to a CSV file. There are three types of whitelists, all of which can be set globally and for specific domains:
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Addresses Whitelist - Use this whitelist to exempt messages that are from specific email addresses.
Host Whitelist - This whitelist is used to exempt specific hosts from designated security restrictions, and to exempt messages based on the specific hosts delivering them (e.g. mail.example.com, smtp.example.net, and so on).
IP Whitelist - The IP Whitelist exempts specific IP addresses from designated security restrictions, and exempts messages based on the IP address of the host attempting to send them.
