Block user to send email locally or externally: Difference between revisions

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===<h1>Block user to send email locally or externally</h1>===
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=Block user to send email locally or externally=
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<h2>Problem</h2>
====Problem====
How to block users to send email locally or externally.


How to block users to send email locally or externally.


<h2>Solution:</h2>
====Solution====


1). Open file ''/opt/zimbra/conf/zmconfigd/smtpd_sender_restrictions.cf'' and add this line at the top
=====Step 1=====
Open file ''/opt/zimbra/conf/zmconfigd/smtpd_sender_restrictions.cf'' and add this line at the top


  %%contains VAR:zimbraMtaSmtpdSenderRestrictions check_sender_access lmdb:/opt/zimbra/postfix/conf/restricted_senders%%
  %%contains VAR:zimbraMtaSmtpdSenderRestrictions check_sender_access lmdb:/opt/zimbra/postfix/conf/restricted_senders%%
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  zmprov ms `zmhostname` +zimbraMtaSmtpdSenderRestrictions "check_sender_access lmdb:/opt/zimbra/postfix/conf/restricted_senders"
  zmprov ms `zmhostname` +zimbraMtaSmtpdSenderRestrictions "check_sender_access lmdb:/opt/zimbra/postfix/conf/restricted_senders"


2). Open file ''/opt/zimbra/conf/zmconfigd.cf'' and add those lines before "'''RESTART mta'''".  This is example on my system
 
 
=====Step 2=====
Open file ''/opt/zimbra/conf/zmconfigd.cf'' and add those lines before "'''RESTART mta'''".  This is example on my system


  POSTCONF    smtpd_restriction_classes  local_only
  POSTCONF    smtpd_restriction_classes  local_only
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  RESTART mta
  RESTART mta


3). Create a file ''/opt/zimbra/conf/postfix_check_recipient_access.cf'' and add the following line
 
=====Step 3=====
Create a file ''/opt/zimbra/conf/postfix_check_recipient_access.cf'' and add the following line


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


4). Create a file ''/opt/zimbra/postfix/conf/restricted_senders'' and list a user which you want to block. Follow this syntax :
 
=====Step 4=====
Create a file ''/opt/zimbra/postfix/conf/restricted_senders'' and list a user which you want to block. Follow this syntax :


  user@yourdomain.com            local_only
  user@yourdomain.com            local_only


5). Create an empty file ''/opt/zimbra/postfix/conf/local_domains'', here we list all the domains where '''restricted users''' allowed to send mails. But we will keep this blank file as we don't want to send emails inside or outside from this id. Following is the command :
=====Step 5=====
Create an empty file ''/opt/zimbra/postfix/conf/local_domains'', here we list all the domains where '''restricted users''' allowed to send mails. But we will keep this blank file as we don't want to send emails inside or outside from this id. Following is the command :


  touch /opt/zimbra/postfix/conf/local_domains
  touch /opt/zimbra/postfix/conf/local_domains


6). Run following commands
=====Step 6=====
Run following commands


  postmap /opt/zimbra/postfix/conf/restricted_senders
  postmap /opt/zimbra/postfix/conf/restricted_senders
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This [https://www.mediawiki.org/wiki/Help:Formatting external link] contains more information about formatting.


Submitted by:  Navdeep Mathur
Submitted by:  Navdeep Mathur

Revision as of 00:32, 31 July 2018

  1. Zimbra Tech Center
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  3. Block user to send email locally or externally

Block user to send email locally or externally


Problem

How to block users to send email locally or externally.


Solution

Step 1

Open file /opt/zimbra/conf/zmconfigd/smtpd_sender_restrictions.cf and add this line at the top 

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

Then execute : 

zmprov ms `zmhostname` +zimbraMtaSmtpdSenderRestrictions "check_sender_access lmdb:/opt/zimbra/postfix/conf/restricted_senders"


Step 2

Open file /opt/zimbra/conf/zmconfigd.cf and add those lines before "RESTART mta". This is example on my system 

POSTCONF    smtpd_restriction_classes  local_only
POSTCONF    local_only  FILE  postfix_check_recipient_access.cf
RESTART mta


Step 3

Create a file /opt/zimbra/conf/postfix_check_recipient_access.cf and add the following line 

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


Step 4

Create a file /opt/zimbra/postfix/conf/restricted_senders and list a user which you want to block. Follow this syntax : 

user@yourdomain.com            local_only
Step 5

Create an empty file /opt/zimbra/postfix/conf/local_domains, here we list all the domains where restricted users allowed to send mails. But we will keep this blank file as we don't want to send emails inside or outside from this id. Following is the command : 

touch /opt/zimbra/postfix/conf/local_domains
Step 6

Run following commands 

postmap /opt/zimbra/postfix/conf/restricted_senders
postmap /opt/zimbra/postfix/conf/local_domains
zmmtactl stop
zmmtactl start


This external link contains more information about formatting.

Submitted by: Navdeep Mathur

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