- Plesk for Linux
- Plesk for Windows
DKIM spam protection is eanbled in Plesk > Tools & Settings > Mail Settings, but outgoing mail is not signed with DKIM: there is no DKIM signature in the mail header.
Site resolves to IP address which is not present on a Plesk server:
# dig +short example.com
# ip a | grep 203.0.113.3
In Plesk site is assigned to different IP address 203.0.113.2 on the tab Domains > example.com > Web Hosting Access.
Plesk server is not located behind a Network Address Translation (NAT).
Domain resolves globally to a different (non-Plesk) server, so DKIM settings defined on Plesk side are ignored.
Change domain's DNS settings to make domain be resolved to IP address of Plesk server. There two options to do it:
Contact domain registrar in order to adjust Plesk name server as primary name server for domain and ensure that Plesk is set up as master DNS server.
- If third party name servers are supposed to be used for domain, contact name server provider in order to change A record for the domain so that it points to the Plesk server IP address.