Email from other domain to three users of my domain show as SPAM in two accounts and in the other no...

Hi guys…

I have problem receiving email from another domains to my domain in virtualmin GPL server…

for example I receive one mail from user@domainext.com to user1@mydomain.com, user2@mydomain.com and user3@mydomain.com

I have spamassasin enable only for this domain… and the email is classified as spam in the inbox of user2@mydomain.com and user3@mydomain.com but in user1@mydomain.com is marked as clean…

I have general configuration in the spam section…

could you give me some help with this issue…

my users is compliant about this…

tks