Injected mail marked as spam when X-Originating-IP header is enabled

-

Problem

If the X-Originating-IP header is enabled, zimbra marks injected/local messages as spam. 

X-Spam-Flag: YES
X-Spam-Score: 7.715
X-Spam-Level: *******
X-Spam-Status: Yes, score=7.715 tagged_above=-10 required=6.6
tests=[BAYES_00=-1.9, RCVD_IN_PBL=3.335, RCVD_IN_RP_RNBL=1.31,
RDNS_NONE=0.793, TVD_PH_BODY_ACCOUNTS_PRE=2.393, TVD_PH_REC=1.784]
autolearn=no autolearn_force=no


X-Originating-IP: [73.188.218.230]
X-Mailer: Zimbra 8.6.0_GA_1153 (ZimbraWebClient - FF36 (Win)/8.6.0_GA_1153)

Resolution

To fix that, we can disable the X-Originating-IP header as follows: 

Administrative Console -> Config -> Global Setting -> MTA -> Messages -> uncheck Add X-Originating-IP to messages.

Additional Content

The Spamhaus PBL is a DNSBL database of end-user IP address ranges which should not be delivering unauthenticated SMTP email to any Internet mail server, except those provided for specifically by an ISP for that customer's use. RCVD_IN_PBL lists IP addresses that are not expected to host a normal mail server, and the PBL has Self-Service removal and IP owner management mechanisms.

  • IP Address Self-Service Removal Mechanism

A feature of the PBL is the elimination of 'false positives' with a server-identifying and automatic removal mechanism for single IP addresses. This allows end users with static IP addresses within a larger dynamic pool, and legitimate mail server operators, to assert that in their opinion their IP addresses are a trustworthy source of email and to automatically remove (suppress) their IP addresses from the PBL database.

  • To check if your IP is listed in PBL click here
  • For more information on RCVD_IN_PBL click here


Ref:

https://wiki.zimbra.com/wiki/Injected_mail_marked_as_spam_when_X-Originating-IP_header_is_enabled

Comments

Post a Comment

Popular posts from this blog

Cambium cnPilot E400/E410/E500 Configuration Tutorial

-
Image
Basic Connectivity:   Router (Broadband/mikrotik |dhcp enabled) >>> E400/E410/E500 + LAPTOP Cambium (Powered ON) [POE port] >>>> LAPTOP [LAN port] Step 1: Open Cambium controller in the browser. Step 2: After entering in to the site click on the Onboard Device option from Home Tab of Left Panel. Step 3: In the Onboard Option, we will get Claim Device option to adopt a Cambium AP. Step 4: Now we will move to the Cambium AP configuration Part. Below are credentials of default login access of cnpilot E400/E410/E500/E410/E500. IP:192.168.0.1 Command Line Access: Username: admin Telnet: Disabled by default Password: admin SSH: Enabled by default (on standard port: 22) ***We can also use dhcp IP to login to the cnpilot E400/E410/E500. We will get login page. Step 5: We can see several TAB on left panel. On the DashBoard Tab, we will get some overall information. Some are useful for the configuration; some are useful for troubleshoo...
Read more

Disabling Zimbra's AntiSpam, Amavis and AntiVirus filtering

-
 Check whether antispam and antivirus service is enabled currently on server using the given command zmprov -l gs <mail.example.com> | egrep -i 'serviceen|servicein'  The above command will list all the services which are currently installed and enabled on the server. Disable the antivirus and antispam services using the given commands zmprov -l ms <mail.example.com> -zimbraServiceEnabled antispam  zmprov -l ms <mail.example.com> -zimbraServiceEnabled amavis zmprov -l ms <mail.example.com> -zimbraServiceEnabled antivirus  Comment the following line in the file /opt/zimbra/postfix/conf/main.cf content_filter = smtp-amavis:[127.0.0.1]:10024  Restart services on server zmcontrol restart  Confirm that the antispam and antivirus services are disabled with the given command zmprov -l gs <mail.example.com> | egrep -i 'serviceen|servicein'  zmcontrol status 
Read more

Error "Unable to retrive Zimbra GPG key for package validation"

-
From the installation log we see: Executing: /tmp/tmp.mSlzRMclVa/gpg.1.sh --keyserver keyserver.ubuntu.com --recv-keys 9BE6ED79 gpg: requesting key 9BE6ED79 from hkp server keyserver.ubuntu.com gpg: keyserver timed out gpg: keyserver receive failed: keyserver error 1. Open port 11371 11371 tcp,udp hkp OpenPGP HTTP Keyserver 2. Force it to use port 80: gpg --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 9BE6ED79 Ref: https://wiki.zimbra.com/wiki/Error_%22Unable_to_retrive_Zimbra_GPG_key_for_package_validation%22
Read more