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Is it possible to sign emails sent via sendmail with DKIM on a Plesk server?

Rusi Uzunov

Updated July 30, 2026 08:59

kb: how-to

Question

Is it possible to sign emails sent via /usr/sbin/sendmail with DKIM on a Plesk server?

Answer

Starting with Plesk 18.0.79, emails submitted via /usr/sbin/sendmail are processed through the mail system when DKIM signing is enabled for the domain

How to enable DKIM signing for outgoing emails of particular domain in Plesk?

If the domain uses external DNS, ensure the required DKIM records are published.

How to check if DKIM is working on a domain in Plesk

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