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Zimbra 8.6 restrict to user sending mail to certain domain

Zimbra 8.6 restrict to user sending mail to certain domain


How to restrict to user sending mail to certain domain. To configure on zimbra mta.







Step 1: To add lines in file /opt/zimbra/conf/zmconfigd/smtpd_sender_restrictions.cf as bellow:
#vi /opt/zimbra/conf/zmconfigd/smtpd_sender_restrictions.cf
Adding lines the top as following:
check_sender_access lmdb:/opt/zimbra/postfix/conf/restricted_senders
Step 2: To add lines in file /opt/zimbra/conf/zmconfigd.cf
vim /opt/zimbra/conf/zmconfigd.cf
Adding the lines following before RESTART mta.
POSTCONF smtpd_restriction_classes local_only
    POSTCONF local_only FILE postfix_check_recipient_access.cf
    RESTART mta

Step 3: To create file "/opt/zimbra/conf/postfix_check_recipient_access.cf"
vi /opt/zimbra/conf/postfix_check_recipient_access.cf
Adding the lines following:
check_recipient_access lmdb:/opt/zimbra/postfix/conf/local_domains, reject
Step 4: To create file "/opt/zimbra/postfix/conf/restricted_senders" and list all user whom you restrict.
vi /opt/zimbra/postfix/conf/restricted_senders
Adding the lines following:
[email protected]            local_only
If you restricting all users in domain.
yourdomain.com            local_only
Step 5: To create file “/opt/zimbra/postfix/conf/local_domains” to list all domain where restrict to user sending mail.
vi /opt/zimbra/postfix/conf/local_domains
Adding the lines following:
yourdomain.com                     OK
otheralloweddomain.com      OK
Step 6: Run command the below to apply.
postmap /opt/zimbra/postfix/conf/restricted_senders
postmap /opt/zimbra/postfix/conf/local_domains
zmmtactl stop
zmmtactl start
*Note: I’m not survive when you upgrade system. Before upgrade you backup the configrue
If you undo this configure.
#postconf -e smtpd_restriction_classes=' '
#zmmtactl reload
Source: https://wiki.zimbra.com/wiki/Restrict_users_to_certain_domain 

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