I have got Zimbra Collaboration Suite 5.0 Setup,
i am receiving a lot of Spams, and Backscatter Spams as well.
I followed the Administration Guide, i enabled DSPAM, i turned on RBL, added all the possible restrictions, and the same happens.
Actually, i need please dedicated Practical steps to follow to prevent the Spams and specially the Backscatter Spams on Zimbra Server.
And what are the settings that have to be applied on the Mail Server's Public IP at ISP to prevent Spams and Bacscatter Spams.
Your replies will be highly appreciated.
Thanks a lot.