Domain level blocking of users

Revision as of 21:39, 25 March 2013 by Quanah (talk | contribs)

Admin Article

Article Information

This article applies to the following ZCS versions.

ZCS 7.0 Article ZCS 7.0 ZCS 8.0 Article ZCS 8.0

Below mentioned are the steps to "REJECT" an external email address from sending mail to the users of the Zimbra Domain.

The same results can also be achieved using Amavis via blacklisting.

1. Set the localconfig value for postfix_smtpd_sender_restrictions

zmlocalconfig -e postfix_smtpd_sender_restrictions="hash:/opt/zimbra/postfix/conf/reject"

2. Create file /opt/zimbra/postfix/conf/reject with the list of email addresses and domains to be rejected in the below format: REJECT REJECT

3. postmap it and restart postfix

 postmap /opt/zimbra/postfix/conf/reject
 zmmtactl stop && zmmtactl start

You'll be able to see the changes show up in /opt/zimbra/log/zmconfigd.log .

Reject messages will be logged in /var/log/zimbra.log ; format looks like this:

[date / hostname] postfix/smtpd[####] NOQUEUE: reject: RCPT from [remote mta]: 554 5.7.1 <senders-email@DOMAIN>:
Sender address rejected: Access denied: from=<senders-email@DOMAIN> to=<local-zimbra-user@domain> proto=ESMTP helo=<remote mta>

The sender will receive a returned email declaring the rejection.

Verified Against: ZCS 8.0, ZCS 7.0 Date Created: 03/21/2013
Article ID: Date Modified: 2013-03-25

Try Zimbra

Try Zimbra Collaboration with a 60-day free trial.
Get it now »

Want to get involved?

You can contribute in the Community, Wiki, Code, or development of Zimlets.
Find out more. »

Looking for a Video?

Visit our YouTube channel to get the latest webinars, technology news, product overviews, and so much more.
Go to the YouTube channel »

Jump to: navigation, search