Editing Sender right restriction Zimbra8 via Milter Service

{{Outdated|reason=Old Article / Architecture / Technology  might not be relevant now May Use for Understand concepts|date=2026-07}}

[[category:Zimbra‏‎]]
[[category:Sandhar Technologies‏‎]]

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==
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 

Usage: zmmilterctl start|stop|restart|reload|refresh|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 ==

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 ==

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 ==

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==

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.