Syntax for Safelists and Blocklist Entries

Senders can be added to safelists and blocklists using the following formats:

• user@domain.com
• server.domain.com
• domain.com
• [10.1.1.0]
• [ipv6:2001:DB8:1::1]
• user@[1.2.3.4]
• user@[ipv6:2001:db8::1]

An identical entry, such as a sender address or a domain, cannot be included on both the safelist and the blocklist at the same time. However, a domain can be on a safelist while an email address for a sender belonging to that domain is on the blocklist (or vice versa), and both rules apply. For example, if example.com is on the safelist, george@example.com can be on the blocklist. In this case, the appliance delivers all mail from example.com without scanning for spam, except mail from george@example.com, which is treated as spam.

It is not possible allow or block a range of subdomains using the following syntax: .domain.com . However, it is possible to block a specific domain using the following syntax: server.domain.com .