Allow blocked compressed format extensions for all users in zimbra

Objective

Allow blocked compressed format extensions for all users in zimbra for Newsnation

1. First log in to the zimbra admin penal and go to the globel setting then in Attachments option And check in the right side Box which Show “urrently blocked extensions by MTA”.

2. If there is showing extesion list then select zip, rar, 7zip and remove them. And then save the changes.

3. If the “Currently blocked extensions by MTA” is empty then login to the IP 115.112.117.163 and then login to zimbra server.

4. now open the given file

   vi /opt/zimbra/postfix/conf/main.cf 
 
  in this file go to the last line in which you will find the following line
      mime_header_checks = regexp:/opt/zimbra/conf/mime_header_checks

5. Now copy the file and open it.

     Vim /opt/zimbra/conf/mime_header_checks

6. Now delete the extensions name like zip, rar, 7zip. And arrange the remaining with the same format as before.

7. After saving this file restart postfix service.