Spam filtering and email delivery

If an email server filters out a message as spam, typically the email is quarantined and does not reach its destination.

Spam filters block email from an ASP, such as Certain, because the 'From' address uses a different domain than the mail server.

From address and header handling

For example, if you customize the 'From' to be eventplanner@example.com, the email still goes out.

Certain's mail server's DNS host name (mail.certain.com) appears in the header.

To reduce the amount of email quarantined as spam, by default, all email is sent from our servers.

The 'From' address is event_information@certain.com and the display name is that of the Registration Contact.

The 'Reply-To' address will be that of the event's Registration Contact.

The effect is that email recipients will see the registration contact's name and email address in the 'From' field.

If they click 'Reply', the 'To' field may show the Registration Contact.

The receiving mail server will recognize that the email's 'From' address is in the same domain as the sending mail server.

Lotus Notes and reply behavior

Note: Some email client software, most notably Lotus Notes, may display the event_information@certain.com address in the From field.

Despite this, when the recipient clicks Reply, the Registration Contact will show in the To field of the email.

Sending from a different FROM address

If you need to send emails with a different FROM address, you would need to reach out to Certain Support.

We can then provide you with information on 3 DNS entries.

You would need to add these DNS entries to the Domain of the email address you wanted to send an Email FROM.

After you or your IT team adds the necessary DNS entries, emails sent FROM that Domain in your event will pass email security checks (DMARC, SPF, and DKIM).

They should not be quarantined or marked as Spam.

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What to do when registrants do not receive emails - SPF/DKIM/DMARC Failure
Reports FAQ - Performing Mass Actions
Session Display Options (Registration Form)
Import/Update Registrations
Security Settings

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