Hello Muzzol!
I've had a look at the message you sent me, and it's not marked as spam by Zimbra:
Code:
X-Spam-Flag: NO
X-Spam-Score: 0.789
X-Spam-Level:
X-Spam-Status: No, score=0.789 tagged_above=-10 required=6.6 tests=[BAYES_00=-1.9, DNS_FROM_AHBL_RHSBL=2.699, T_RP_MATCHES_RCVD=-0.01] autolearn=no
The IP in the X-Originating-From header is indeed in a couple of RBLs, but that alone is not enough to raise the score over the 6.6 points required to be marked as spam.
Is the user receiving this using a client such as Outlook or Thunderbird? In this case the culprit might be the anti-spam system of the client, so I'd suggest to have a look at that.
For the records, you can disable the inclusion of the X-Originating-From header in the Zimbra Admin Console: "Configure" -> "Global Settings" -> "MTA" -> "Messages".
Have a nice day,
Cine
the ZeXtras Team
Bookmarks