Difference between revisions of "Domain level blocking of users"

(Domain level blocking of users)
m
Line 3: Line 3:
 
<div class="col-md-12 ibox-content">
 
<div class="col-md-12 ibox-content">
 
=Domain level blocking of users=
 
=Domain level blocking of users=
{{KB|{{ZC}}|{{ZCS 8.6}}|{{ZCS 8.5}}|{{ZCS 8.0}}|}}
+
{{KB|{{ZC}}|{{ZCS 8.7}}|{{ZCS 8.6}}|{{ZCS 8.0}}|}}
 +
 
 +
==ZCS 8.7 and later==
 +
* Create file /opt/zimbra/postfix/conf/postfix_reject_sender with the list of email addresses and domains to be rejected in the below format:
 +
  user@domain.com REJECT
 +
  domainX.com REJECT
 +
 
 +
* execute the zimbraMtaSmtpdSenderRestrictions
 +
zmprov ms 'yourzimbraservername' +zimbraMtaSmtpdSenderRestrictions "check_sender_access lmdb:/opt/zimbra/conf/postfix_reject_sender"
 +
 
 +
* postmap it
 +
/opt/zimbra/postfix/sbin/postmap /opt/zimbra/postfix/conf/postfix_reject_sender
  
 
Below mentioned are the steps to "REJECT" an external email address from sending mail to the users of the Zimbra Domain.
 
Below mentioned are the steps to "REJECT" an external email address from sending mail to the users of the Zimbra Domain.
Line 12: Line 23:
  
 
Set smtpd_sender_restrictions as appropriate for the version of ZCS
 
Set smtpd_sender_restrictions as appropriate for the version of ZCS
==ZCS 7==
 
zmlocalconfig -e postfix_smtpd_sender_restrictions="check_sender_access hash:/opt/zimbra/postfix/conf/postfix_reject_sender"
 
 
==ZCS 8.0==
 
Add "check_sender_access hash:/opt/zimbra/postfix/conf/postfix_reject_sender" as the first line of '''/opt/zimbra/conf/zmconfigd/smtpd_sender_restrictions.cf'''
 
  
 
==ZCS 8.5 and 8.6==
 
==ZCS 8.5 and 8.6==
Line 34: Line 40:
 
   zmmtactl stop && zmmtactl start
 
   zmmtactl stop && zmmtactl start
  
==ZCS 8.7 and later==
+
==ZCS 8.0==
* Create file /opt/zimbra/postfix/conf/postfix_reject_sender with the list of email addresses and domains to be rejected in the below format:
+
Add "check_sender_access hash:/opt/zimbra/postfix/conf/postfix_reject_sender" as the first line of '''/opt/zimbra/conf/zmconfigd/smtpd_sender_restrictions.cf'''
  user@domain.com REJECT
 
  domainX.com REJECT
 
  
* postmap it
+
==ZCS 7==
  /opt/zimbra/postfix/sbin/postmap /opt/zimbra/postfix/conf/postfix_reject_sender
+
zmlocalconfig -e postfix_smtpd_sender_restrictions="check_sender_access hash:/opt/zimbra/postfix/conf/postfix_reject_sender"
  
 
== Verification ==
 
== Verification ==
Line 54: Line 58:
 
The sender will receive a returned email declaring the rejection.
 
The sender will receive a returned email declaring the rejection.
  
{{Article Footer|ZCS8.7,ZCS 8.5, ZCS 8.0, ZCS 7.0|03/21/2013}}
+
{{Article Footer|ZCS8.7, ZCS 8.6, ZCS 8.0, ZCS 7.0|03/21/2013}}
  
 
[[Category:Administration]]
 
[[Category:Administration]]
 
[[Category:MTA]]
 
[[Category:MTA]]

Revision as of 14:07, 4 September 2017

Domain level blocking of users

   KB 2689        Last updated on 2017-09-4  




0.00
(0 votes)

ZCS 8.7 and later

  • Create file /opt/zimbra/postfix/conf/postfix_reject_sender with the list of email addresses and domains to be rejected in the below format:
  user@domain.com REJECT
  domainX.com REJECT
  • execute the zimbraMtaSmtpdSenderRestrictions
zmprov ms 'yourzimbraservername' +zimbraMtaSmtpdSenderRestrictions "check_sender_access lmdb:/opt/zimbra/conf/postfix_reject_sender"
  • postmap it
/opt/zimbra/postfix/sbin/postmap /opt/zimbra/postfix/conf/postfix_reject_sender

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

See also https://bugzilla.zimbra.com/show_bug.cgi?id=96958

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

Set smtpd_sender_restrictions as appropriate for the version of ZCS

ZCS 8.5 and 8.6

Create the postmap database as defined below Modify /opt/zimbra/conf/zmconfigd/smtpd_sender_restrictions.cf, by adding this as the second line of the file:

%%contains VAR:zimbraMtaSmtpdSenderRestrictions check_sender_access lmdb:/opt/zimbra/postfix/conf/postfix_reject_sender%%

Then execute:

zmprov ms <zmhostname> +zimbraMtaSmtpdSenderRestrictions "check_sender_access lmdb:/opt/zimbra/postfix/conf/postfix_reject_sender"
  • Create file /opt/zimbra/postfix/conf/postfix_reject_sender with the list of email addresses and domains to be rejected in the below format:
  user@domain.com REJECT
  domainX.com REJECT
  • postmap it and restart postfix
 /opt/zimbra/postfix/sbin/postmap /opt/zimbra/postfix/conf/postfix_reject_sender
 zmmtactl stop && zmmtactl start

ZCS 8.0

Add "check_sender_access hash:/opt/zimbra/postfix/conf/postfix_reject_sender" as the first line of /opt/zimbra/conf/zmconfigd/smtpd_sender_restrictions.cf

ZCS 7

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

Verification

Check the Postfix configuration with postconf | grep smtpd_sender_restrictions

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: ZCS8.7, ZCS 8.6, ZCS 8.0, ZCS 7.0 Date Created: 03/21/2013
Article ID: https://wiki.zimbra.com/index.php?title=Domain_level_blocking_of_users Date Modified: 2017-09-04



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