Solved

How to restrict Email send out to  with Postfix to prevent user from using fake address?

Posted on 2015-02-10
4
641 Views
Last Modified: 2015-02-25
I configured a Postfix & Dovecot mail server to send notification to user. I want to restrict email address domain to prevent user from send out email with fake email address.
Example: my domain is truedomain.com, so I want only email address with this domain can be send out via my mail server. Other fake email address are not able to send out.
0
Comment
Question by:Sida Say
  • 2
  • 2
4 Comments
 
LVL 77

Accepted Solution

by:
arnold earned 500 total points
ID: 40604943
You would need to setup a rule dealing with allow relay section where you would need to

http://www.postfix.org/SMTPD_ACCESS_README.html

Though have to double check how you would deny the sender given the user authenticated earlier or the IP is authorized to relay.

There is also the reject for SMTP of unknown domains.

It might be a combination, but it might be more complicated dealing with revoking relay rights, though mailing to an internal recipient might involve further research.  

Searching for postfix deny based on sender, reveals options/sites that can not be included here.
0
 
LVL 1

Author Comment

by:Sida Say
ID: 40613298
Thank you @anold, If can, would you give me a sample configuration.
0
 
LVL 77

Expert Comment

by:arnold
ID: 40613304
The difficulty as described in the faq deals with controlling inbound by those restrictions. The option you seek on enforcing outgoing sender domain is not enforceable once the connection is set to allow relay.
0
 
LVL 1

Author Closing Comment

by:Sida Say
ID: 40632198
not a perfect solution, but ca give me some clues
0

Featured Post

Use Case: Protecting a Hybrid Cloud Infrastructure

Microsoft Azure is rapidly becoming the norm in dynamic IT environments. This document describes the challenges that organizations face when protecting data in a hybrid cloud IT environment and presents a use case to demonstrate how Acronis Backup protects all data.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Easy CSR creation in Exchange 2007,2010 and 2013
This process describes the steps required to Import and Export data from and to .pst files using Exchange 2010. We can use these steps to export data from a user to a .pst file, import data back to the same or a different user, or even import data t…
The purpose of this video is to demonstrate how to use PicMonkey software to customize images for a Mailchimp campaign. Picmonkey is free and simple online software which can be used by users who don’t have robust editing software such as Photoshop,…
With Secure Portal Encryption, the recipient is sent a link to their email address directing them to the email laundry delivery page. From there, the recipient will be required to enter a user name and password to enter the page. Once the recipient …

803 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question