I'm using spamassassin 3.2.5. Now, I must a whitelist_from containing *@
foo.com in my local.cf.

However, there are still 1 email that has been tagged as spam. In my
understanding, if a domain was in whitelist_from, even if it was tagged as
spam, it will delivered to the recipient. I restart the spamd after I edit
local.cf so it must take effect.

Is this the right way to whitelist? As I check, when using 3.2.5, this is
the right way of whitelisting a domain.