I have a problem on virtualmin about spamassassin white list. I have already defined the wildcards email address (server domain itself, e.g. virtual domain: domaina.com, wildcard address: *@domaina.com) at "spamassassin->allowed addresses". And also enable "select Yes" at feature "server configuration->spam and virus delivery->always allow mail from mailboxes in domain". However, we still encounter spam mail within internal email transfer within domain (e.g. "domaina.com"). How can I solve it?