Hi all, I run a VPS using Plesk. I am considering using enabling MAPS spam protection and using: zen.spamhaus.org More information can be found here: http://www.spamhaus.org/zen/ However, Spamhau cautions the server admins: "Because ZEN includes the XBL and PBL lists, do not use ZEN on smarthosts or SMTP AUTH outbound servers for your own customers (or you risk blocking your own customers)." I use SMTP AUTH on my mail server. Am I at risk of blocking myself? Any help or experience with this is appreciated!
The general rule of thumb is that you should not run SBL/XBL/Zen on an SMTP relay. You should run it on your incoming mail server. If this is the same server, it's not a bad idea to do your relaying on a different from from 25, for example 587 the "mail submission" port with smtp auth is a good choice if this is possible on your server. -Raymond