hello i want to know if it's possible to configure postfix , so that it checkes on spam, and removes it, when receiving mail from my IPS-mail adress my problem is,, that i recieve about 50 spam mails each day from an mail adress,, supplied by my ISP.
You can install and configure fetchmail to fetch the mails from your ISP account. Then in Postfix you can integrate SpamAssassin (e.g. with amavisd or procmail).