How to enable DKIM signing for all domains in Plesk for Windows Server

Question

How to enable DKIM signing for all domains in Plesk for Windows Server?

Answer

1. Connect to a Plesk server via RDP.

2. Start a command prompt as an Administrator and run the command below to generate a list of all domains:

   C:> "%plesk_bin%dbclient.exe" --direct-sql --sql="SELECT name FROM domains" > C:dns.txt

3. Allow signing outgoing mail by DKIM spam protection on a server level:

   C:> plesk bin mailserver.exe --sign-outgoing-mail true

4. Enable DKIM signing for all domains:

   C:> for /f "skip=1" %i in (C:dns.txt); do ("%plesk_cli%domain_pref.exe" --update %i -sign_outgoing_mail true)