spamd fails to start due to missing rules

Symptoms

SpamAssasssin (spamd) fails to start, and logs the following:

CONFIG_TEXT: spamd[8574]: config: no rules were found! Do you need to run 'sa-update'?

Cause 

This issue occurs when no SpamAssassin rules are found on the server, including the default ruleset.

Resolution

1. Manually run SpamAssassin's rule update script to download the default ruleset:

   # /usr/local/cpanel/3rdparty/bin/sa-update

2. Restart the spamd service: 

   # /scripts/restartsrv_spamd