How To Enable SPF Checking for Incoming Connection

-

The following is step by step how to enable spf checking for incoming connection.

You need to enable cbpolicyd. After enable policyd, please open policyd webui (http://IPZIMBRA:7780/webui/index.php) and create some groups, policy and spf.


# Create Groups

Select Policies | Groups. Select action and add groups. given name list_domain. On comment, you can empty or filled with comment. Select a group that has been made. On action, select members and fill with your domain. See the following example. make sure disabled status is no at groups or members groups



# Create Policy

Select Policies | Main. Add new policy and give name or information like the following picture. Then submit query

policy-spf


select new policy has been made and select members on action. Add member and fill on source/destination with group that has been made. See the following example


policy-spf-members

Above configuration only check spf if email connection come from external domain (Gmail, Yahoo and etc) to my internal domain. If email connection come from internal domain to internal domain, or internal domain to external domain, spf checking will be ignore/skip. make sure disabled status is no


# Create SPF Check

Select SPF Checks | Configure. Select Add on Action and configure like follow. Then Submit

spf-configure

Make sure disabled status is no. Enable policyd checkspf and restart policyd service

su - zimbra
zmprov ms `zmhostname` zimbraCBPolicydCheckSPFEnabled TRUE
zmcbpolicydctl restart

SPF checking for incoming connection has been enabled and configured. Please see zimbra.log if getting spf fail.

The following is example when getting spf fail

Mar 10 18:45:43 smtp postfix/smtpd[28068]: NOQUEUE: reject: RCPT from c117-167.nanaonet.jp[119.18.167.117]: 554 5.7.1 <shaftssg@onet.pl>: Sender address rejected: Failed SPF check; Please see http://www.openspf.org/Why?s=mfrom;id=shaftssg%40onet.pl;ip=119.18.167.117;r=smtp.imanudin.net; onet.pl, Sender is not authorized by default to use 'shaftssg@onet.pl' in 'mfrom' identity (mechanism '-all' matched); from=<shaftssg@onet.pl> to=<xxxx@imanudin.net> proto=ESMTP helo=<[119.18.167.117]>

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