Enabling SPF and DKIM Keys in Centos Web Panel [CWP]

In this tutorial we will be guiding you on how to enable SPF and DKIM in CentOS Web Panel.

 

1) Login to CWP (http://your-ip.com:2030)

 

2) Navigate to Email –> Postfix Manager and tick mark Install DKIM & SPF: and click on Rebuild Mail Server

 

3) Now goto Email –> DKIM and SPF Manage and Select Domain Name, tick enable spf and then click Add DKIM

 

As you see in above image v=spf1 is not enabled yet. Lets enable SPF manually.

 

4) Navigate to DNS Function –> List DNS Zones and there you will see your domain name and infront of it there is Edit File button. Click Edit File and Add below entry.


your-domain-name. 14400 IN TXT "v=spf1 +a +mx +your-ip-address ~all"

 

You have successfully enabled SPF. Now lets make DKIM verification working.

 

5) open /etc/opendkim/TrustedHosts and add your hostname.

nano /etc/opendkim/TrustedHosts

 

6) open /etc/postfix/main.cf and add the lines below.

nano /etc/postfix/main.cf

smtpd_milters = inet:127.0.0.1:8891
non_smtpd_milters = $smtpd_milters
milter_default_action = accept
milter_protocol = 2

 

7) Finally restart postfix.

 

service postfix restart

 

You are done with enabling SPF and DKIM Keys. Now login to webmail (http://yourdomain.com/webmail) and send email to check-auth@verifier.port25.com to verify if everything is setup correctly.

 

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