Notice
Starting June 15, 2025 - email validation will have to be done via standard, pre-approved email addresses:
- admin@domain.com
- administrator@domain.com
- hostmaster@domain.com
- postmaster@domain.com
- webmaster@domain.com
Validation via custom email addresses specified on the WHOIS entry will no longer be possible after this. This change is being made to enhance security and to keep up with the latest best practices for Certificate Authorities.
If you have chosen email as your Verification method and something went wrong please have a look at the possible reasons and troubleshooting steps:
The email addresses listed in the options for email validation are a set of standard email addresses for domain admins (admin@... or webmaster@domain.com) alongside addresses listed on the corresponding WHOIS for the domain in question.
As the owner of the domain or administrator of it, you should be able to access these.
If you don't own an email for your domain, you need to choose a different verification method.
- Ensure that your constructed email address account/alias has been properly configured. Test the constructed email address by sending an email to it from a known-working email account.
- You can further check if your DNS has MX records (https://mxtoolbox.com)
- and if E-mail forwarding is enabled
(e.g. for Cloudflare https://developers.cloudflare.com/email-routing/get-started/enable-email-routing/)
- Check your junk mail and spam folders
- Ensure that your firewall or email security appliance did not block the email or place it in quarantine - we see this as one of the main reasons why emails are not delivered
- Email are being sent from ZeroSSL <noreply@trust-provider.com> so make sure to whitelist this
- Resend the email from within your ZeroSSL Dashboard
Troubles during verification?
Before contacting us please try the following three things:
- Please try also at least one of the other two remaining methods.
- Visit this Troubleshooting article for further help!!
- Please check for an ongoing service incident.