Sender right restriction Zimbra8 via Milter Service

Specially for Zimbra 8

The Zimbra milter allows for the regulation of distribution list senders on a Global or server level. When the milter server is enabled, only users who have been granted explicit sending permissions will be allowed. Enabling the Milter Server

Implementation[edit]

Via Zimbra Admin Panel

Global: Home > Configure > Global Settings > MTA > Milter Server
Server: Home > Configure > Servers > Select Desired Server > MTA > Milter Server

Alternatively using the CLI:

# su - zimbra
$ zmprov modifyConfig zimbraMilterServerEnabled TRUE

For a specific server (say eg.example.com):

$ zmprov modifyServer eg.example.com zimbraMilterServerEnabled TRUE

The above steps will ensure that milter will be automatically started via "zmcontrol start"

To start the milter manually:

       $ zmmilterctl start

To check the status of the milter:

       $ zmmilterctl status

The following will provide examples for granting sender permissions on the CLI:

Caution Before Starting the Assignments of Rights to users for distribution list[edit]

First Check the status of milter status

zmmilterctl status
Milter server is running.

Should be Running

Also now check whether Milter parameter is enabled

zmprov gs node.sandhar.in zimbraMilterServerEnabled
# name node.sandhar.in
zimbraMilterServerEnabled: TRUE

Should be TRUE else please do not proceed . please Enable it before Proceeding .

Assigning Rights to Distribution[edit]

User - grants a user sending permissions to a distribution list

$ zmprov grr dl distributionlist@domain.com usr user@domain.com sendToDistList 
$ zmprov grr dl all.staff@orientbell.com usr vijay.thakur@orientbell.com sendToDistList

After granting or revoking rights for the milter, you must reaload the configuration for the changes to take effect.

$ zmmtactl reload

Removing Rights to Users for any Distribution List[edit]

Modifying and revoking grants

If you want to remove or modify permissions, you'll need to use 'zmprov rvr' instead of 'zmprov grr'.

Example of removing sendToDistList permissions for a user:

$ zmprov rvr dl distributionlist@domain.com usr user@domain.com sendToDistList

After granting or revoking rights for the milter, you must reaload the configuration for the changes to take effect.

$ zmmtactl reload

Reference[edit]

Reference : http://wiki.zimbra.com/wiki/Enabling_and_administering_the_Zimbra_milter

NOTE: Before doing the above exercise be ensure that distribution list must be exists. and let client add the member to that distribution list.