title: mail spam server filter gateway
body: <p>I have an exchange 2010 multi-tenant email server that has email addresses of many domains. I want to setup a spam filter for my mail server I have been looking on the internet but cant figure out the best solution to implement. Spamassasin with Postfix. Spamassasin i understand does not delete any emails but just marks the email. Postfix can be used as a MTA to forward email to the mail server. but postfix does not store any emails. how can i implement a solution whereby i have a server that stores all ham and spam emails but only forwards the ham emails to my mail server so i can check the spam server if there is any false positives. If you could please just give pointers in the right direction</p>
  
  <p>thanks</p>
  
  <p>Rehan Miah</p>