I have upgraded my Zimbra setup from ZCS 5.0.13 to ZCS 18.104.22.168 in June'2010 and till date i didnt faced much issues in my Zimbra server. This version was pretty stable for me and i could handled all day to day issues without any major challenge. I must say Zimbra is nice product.
Now I feel that I should again start POC for up-gradation to get additional benifits. My main requirement is antispam and security. I saw policyd is compatible with version 7 and 8 but I am confused which version I should select for up-gradation.
Can anyone please suggest me any latest stable version where I can get all antivirus and antispam related functionality.
I am using 6.0.6 version. ( Release 6.0.6_GA_2330.RHEL5_64_20100505212335 RHEL5_64 FOSS edition.)