Postfix only allow whitelisted Recipient Domain

In this tutorial, How to Configure "Postfix only allow whitelisted Recipient Domain". We test environment with user data. To minimize the risk of sending to unwanted email recipients.

Step 1: Add line into main.cf file as below

smtpd_recipient_restrictions = check_recipient_access hash:/etc/postfix/recipient_domains, reject

Note: Warring /etc/postfix/recipient_domains, reject , Allow receive email in recipient_domain, and REJECT All domain not in whitelisted domain.


Step 2: To create recipient domain is the whitelist file

mycompany.com OK
mail.huuphan.com OK

Note: only two domain mycompany.com and mail.huuphan.com receive mail

Step 3: To generate hash file:

$ sudo postmap /etc/postfix/recipient_domains

Step 4: To restart postfix service

$ sudo /etc/init.d/postfix restart

Now to try sending an email to a another domain not in whitelist.
You will find error something like that as below:

NOQUEUE: reject: RCPT from …: 554 5.7.1 <[email protected]>: Recipient address rejected: Access denied

Conclusion

Thought the article, To help you configure Postfix server only allow whitelisted domain. You have any question to comment below.

Thanks for reading Postfix only allow whitelisted Recipient Domain My blog Effortless Zimbra Mail Management: Unleashing the Power of Linux Commands, How-To, and Bash Scripts I hope this is useful.

post new :

Huu Phan | Blog Linux operating system | Huu Phan ~ Zimbra Mail Server,linux,bash script,centos,linux command | www.huuphan.com

You sharing? :

FacebookGoogle+