Whitelist an email address in legacy cPanel

Applies to: Legacy cPanel mail environments still in use on OneNet Servers.

Use this guide when a trusted sender keeps landing in junk or being filtered by legacy cPanel mail rules.

Before you start

• Confirm that the mailbox still runs on a legacy cPanel service and not on CrossBox or Plesk mail.
• Keep the exact sender address or domain ready.

Steps on OneNet Servers

1. Log in to the legacy cPanel mailbox controls or webmail filtering area attached to the account.
2. Open the spam, filter, or whitelist settings for the mailbox.
3. Add the exact sender address or domain you trust and save the rule.
4. Send a fresh test message from that sender after the change.

What you should see next

• New mail from the trusted sender should stop being filtered into junk by the local mailbox rule set.

Common issues

• Whitelisting a sender in cPanel does not fix a completely external spam filter or a DNS reputation problem upstream.

When to contact support: Contact support if the mailbox is no longer on cPanel or if the trusted sender is still filtered after the local whitelist rule has been saved.