Version 1.8.0

Added a blacklist check for client IPs to help avoid hitting the size limit of the spam IP database field.

Version 1.7.0

Added a URI blacklist lookup option to help avoid hitting the 12000 character size limit of the domain list field.

Version 1.6.0

Add the ability to block e-mail addresses by regular expression.

Version 1.5.0

Add the ability to allow only listed domains (whitelist) instead of allowing only non-listed domains (blacklist).

Version 1.4.0

Adds the ability to block all subdomains of a given domain.
Adds the option to block specific email addresses.