The mesasge was sent from one zimbra account to another zimbra account on the same mailserver (zcs-5.0.16_GA_2921.UBUNTU6_64 installed on debian etch 64).X-Spam-Status: No, score=0.301 tagged_above=-10 required=6.6 tests=[AWL=0.654,
BAYES_00=-2.599, HTML_IMAGE_ONLY_16=1.526, HTML_MESSAGE=0.001,
I checked IP of our mailserver in DNSBL Information - Spam Database Lookup SORBS (Spam and Open-Relay Blocking System) and our mailserver was not listed there.
Why RDNS_NONE is marked 0.1 , when PTR, /etc/hosts are OK.
Thanks for any ideas.