Introduction
The information provided below explains how to white-list a recipient domain for outgoing spam scans.
Procedure
You can modify the global SpamAssassin configuration file to whitelist the domain name. It's located at:
/etc/mail/spamassassin/local.cf
You would need to add a line similar to the following
all_spam_to *@somedomain.tld
Once you make the changes, restart SpamAssassin with the following command:
/scripts/restartsrv_spamd
More information on the available filter options is available in the official SpamAssassin documentation here:
SpamAssassin: WHITELIST AND BLACKLIST OPTIONS