Editing Category:Zimbra/Restricting users to send mails to certain domains

'''Restricting users to send mails to certain domains'''
== Headline text ==


1. Enter following in the file “/opt/zimbra/conf/postfix_recipient_restrictions.cf”. Make sure it is entered at the top of the file.

 vi /opt/zimbra/conf/postfix_recipient_restrictions.cf

 check_sender_access hash:/opt/zimbra/postfix/conf/restricted_senders 


2. Enter following in "/opt/zimbra/conf/zmmta.cf"

 vi /opt/zimbra/conf/zmmta.cf

  ###Find the section labeled SECTION mta and enter the following two lines directly below####

 POSTCONF    smtpd_restriction_classes      local_only

 POSTCONF    local_only                                 FILE  postfix_check_recipient_access.cf



3. Create a file "/opt/zimbra/conf/postfix_check_recipient_access.cf"

 vi /opt/zimbra/conf/postfix_check_recipient_access.cf

check_recipient_access hash:/opt/zimbra/postfix/conf/local_domains, reject


4. Create a file "/opt/zimbra/postfix/conf/restricted_senders" and list all the users, whom you want to restrict. Follow this syntax:

 vi /opt/zimbra/postfix/conf/restricted_senders

(all users in tipl domain)            local_only


5. Create a file "/opt/zimbra/postfix/conf/local_domains" and list all the domains where "restricted users" allowed to sent mails. Please follow this syntax:

 vi /opt/zimbra/postfix/conf/local_domains

domain.com          OK 


6. Run following commands:

 postmap /opt/zimbra/postfix/conf/restricted_senders

 postmap /opt/zimbra/postfix/conf/local_domains 

 zmmtactl stop 

 zmmtactl start


After these settings, all the users listed in "/opt/zimbra/postfix/conf/restricted_senders" are restricted to send mails only to domain which are defined in "/opt/zimbra/postfix/conf/local_domains".