Recommend server antispam?

Question

Email

Hey!
But tell me - what are the server antispam solutions with server licensing today?
There is a server on postfix with 3k users - I want to protect myself from spam in some reasonable money.

Answer 1

If it's not important for you to give money, then the standard Spamassassin and DSPAM do their job quite successfully.

Answer 2

milter-greylist on the front and dspam on the second line. It would be possible without dspam, it is needed if you want to catch custom text templates. Well, or if you need whistles - this is for Kaspersky :)