- Plesk for Linux
Failed to install SSL/TLS certificate with Let's Encrypt extension. The following error is showin in Plesk UI:
PLESK_ERROR: SSL Let's Encrypt certificate installation error: Invalid response from https://acme-v01.api.letsencrypt.org/acme/new-reg.<br />
Type: urn:acme:error:invalidEmail<br />
Status: 400<br />
Detail: Error creating new registration :: DNS problem: NXDOMAIN looking up MX for example.com
Lets Encrypt extension requires valid and reachable email address.
MX DNS record is missing for specified domain mailboxes: @example.com.
- Log into Plesk
Create MX record under Domains > example.com > DNS Settings.
Go to Subscriptions > example.com> John Doe > Editing Contact Info;.
Change email address from firstname.lastname@example.org to a valid and reachable email address.