The Spasm Whitelist

Whitelists may be on a per-user (user@domain.com) basis, or a per-domain (domain.com) basis. A user's personal whitelist is first checked, followed by the associated domain whitelist. If a message is caught by one of the whitelists, the message is accepted and bypasses all filters. A whitelist entry can be one of four things:

• Email Address: This is the sender's envelope address, in the form "user@domain.com".
• Hostname: This is a hostname or domain name of the sending server. For example, "my.host.domain.com", or "domain.com", or even just "com". This will check all subdomains of a given hostname for a match in the whitelist. Hostname entries do not apply to email addresses. They only apply to the DNS hostname for a mail server.
• Sender Domain: This is the domain name portion of an email address. To whitelist all senders from a certain domain, enter the domain name, preceded by an @ sign. For example, "@SpiritOne.com" will whitelist all SpiritOne.com addresses.
• IP Address: This is an IP address of the sending server. For example, "10.1.2.3". It may also be a classful netblock in the form "10.1.2", "10.1", or even just "10"; or it may be a CIDR address in the form "10.1.2.0/25". CIDR addresses must be in "Dotted Quad" notation; that is, they must be "10.1.2.0/25", not "10.1.2/25".

Whitelisting Yahoo Groups

Adding @returns.groups.yahoo.com to the whitelist will whitelist all Yahoo Groups.

Annotating Whitelist Entries

A comment that serves as a reminder of who or what is being whitelisted may be optionally appended to any whitelist entry. Comments are delimited with "//", like so:

whitelist_entry // comment

Some Examples

@returns.groups.yahoo.com // Yahoo Groups
66.218.64.0/19 // Yahoo Groups servers
216.99.192.0/19 // SpiritOne's network