How to exclude a domain from DMARC check in Plesk for Linux

Question

How to add a domain to DMARC whitelist in Plesk for Linux?

Answer

1. Connect to a Plesk server via SSH.

2. Create the dmarc.conf file in /etc/psa/:

   # touch /etc/psa/dmarc.conf

3. Open the dmarc.conf file in a text editor. In this example, we are using the vi editor:

   # vi /etc/psa/dmarc.conf

4. Add the following configuration to the file. Replace example domains with domains that must be ignored by DMARC check:

   Note: If several domains are to be added, separate them by a comma.

   CONFIG_TEXT: IgnoreMailFrom example.com, example.net
   
   ## IgnoreMailFrom domain[,...]
   ## default (none)
   ## Gives a list of domain names whose mail (based on the From: domain) is to
   ## be ignored by the filter. The list should be comma-separated. Matching
   ## against this list is case-insensitive. The default is an empty list,
   ## meaning no mail is ignored.

5. Save the changes and close the file.