URL shortener cache -
The full path to a database file to write cache entries to. The database will be created automatically if is does not already exist but the supplied path and file must be read/writable by spamd. NOTE: you will need the DBD::SQLite module installed to use this feature.
URL shortener cache TTL -
The length of time a cache entry will be valid for in seconds.
URL shortener log -
The full path to a log file to be written to. The file will be created if it does not already exist and must be writable by spamd.
URL shortener log to syslog -
Log decoded URLs to syslog.
URL shorteners -
A list of URL shortener services (one entry per line).