All About Validation E-Mails for SSL Certificates

All About Validation E-Mails for SSL Certificates

Zane Lucas

Before an SSL Certificate can be issued, the Certificate Authority (CA) has to confirm that you control the domain. When the e-mail method is used, that confirmation arrives as a validation e-mail, and acting on it promptly keeps issuance moving.

This guide explains how the validation e-mail works, which addresses it can be sent to, where to look for it, and what to do when it does not arrive. Learn About SSL Certificate Validation 🔗

The Validation E-Mail Method

E-Mail is one of three Domain Control Validation (DCV) methods, alongside a Domain Name System (DNS) record and a file placed on the web server. With the e-mail method, the Certificate Authority (CA) sends a message containing a unique link or code to an address at your domain.

Opening the link or entering the code confirms control of the domain, and for a Domain Validation (DV) SSL Certificate the issue often follows within minutes. Discover Domain Validation (DV) Information 🔗

The Approved E-Mail Addresses

The validation e-mail can only be sent to one of five fixed addresses at the domain, namely admin, administrator, hostmaster, webmaster, or postmaster, each followed by the domain name. You choose which of these to use when you order, so at least one of them must be reachable.

Contact details drawn from WHOIS are no longer accepted, following an industry rule change during 2025. Setting up one of the five role addresses in advance is the reliable way to receive the message. Learn About E-Mail Address Handling 🔗

Locating the Validation E-Mail

Check the main inbox of the chosen address first, then the spam or junk folders, since filtering can divert these messages. A mailbox that quarantines unfamiliar senders is a common reason the e-mail seems to be missing.

When the E-Mail Does Not Arrive

A fresh validation e-mail can be sent at any time from the SSL Certificate Tracking and Management Tool, so a resend is usually the quickest fix. Confirm the address is correct and that filters allow messages from the Certificate Authority (CA) before resending. View the SSL Certificate Tracking and Management Tool 🔗

If messages to the address are not being received at all, the cause usually sits with the mail server or its filtering rather than the SSL Certificate order. Where the order details themselves are wrong, Trustico® support can help put them right. Learn About E-Mail Delivery Issues 🔗

Switching to a Different Validation Method

The e-mail method is not the only option. If no role address is convenient, the validation can be switched to a Domain Name System (DNS) CNAME record or a file placed on the web server, both set through the SSL Certificate Tracking and Management Tool.

These methods prove control without any mailbox, which suits domains where e-mail is hosted elsewhere or tightly filtered. Learn About File-Based Authentication 🔗

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Most Popular Questions

Frequently asked questions covering validation e-mails for SSL Certificates, the approved addresses, where to find the message, what to do when it does not arrive, and switching validation methods.

What Does a Validation E-Mail Do?

E-Mail is one of three Domain Control Validation (DCV) methods, alongside a Domain Name System (DNS) record and a file placed on the web server. The Certificate Authority (CA) sends a message containing a unique link or code to an address at your domain, and opening the link or entering the code confirms control of the domain.

Which Addresses Can Receive the Validation E-Mail?

The validation e-mail can only be sent to one of five fixed addresses at the domain, namely admin, administrator, hostmaster, webmaster, or postmaster, each followed by the domain name. You choose which of these to use when you order, so at least one of them must be reachable.

Are WHOIS Contact Details Still Accepted?

Contact details drawn from WHOIS are no longer accepted, following an industry rule change during 2025. Setting up one of the five role addresses in advance is the reliable way to receive the message.

Where Should Someone Look for the E-Mail?

Check the main inbox of the chosen address first, then the spam or junk folders, since filtering can divert these messages. A mailbox that quarantines unfamiliar senders is a common reason the e-mail seems to be missing.

What Should Someone Do When the E-Mail Does Not Arrive?

A fresh validation e-mail can be sent at any time from the SSL Certificate Tracking and Management Tool, so a resend is usually the quickest fix. Confirm the address is correct and that filters allow messages from the Certificate Authority (CA) before resending.

Why Might the Address Receive No Messages at All?

If messages to the address are not being received at all, the cause usually sits with the mail server or its filtering rather than the SSL Certificate order. Where the order details themselves are wrong, Trustico® support can help put them right.

Can Someone Switch to Another Validation Method?

The e-mail method is not the only option. If no role address is convenient, the validation can be switched to a Domain Name System (DNS) CNAME record or a file placed on the web server, both set through the SSL Certificate Tracking and Management Tool.

Why Choose a Domain Name System (DNS) or File Method?

These methods prove control without any mailbox, which suits domains where e-mail is hosted elsewhere or tightly filtered. They set control directly through a record or a file rather than a message.

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