Suspending a mailbox login or outgoing mail without deleting it

Identify the exact mailbox and decide whether the problem concerns authentication, incoming delivery or sending. Export necessary logs and arrange an alternate business contact before interrupting a production mailbox.

1. Open Email Accounts > Manage for the affected address and find Restrictions.
2. Change only the required control. Login, receiving and outgoing-mail restrictions have different effects; read the displayed choices carefully.
3. If outgoing messages are held rather than rejected, record that decision and review the queued mail before later releasing the restriction. A backlog can otherwise send unexpectedly.
4. Save the settings and test the restricted function with a fresh connection. Existing mail applications may continue displaying cached messages.
5. Investigate the cause, rotate an exposed password and remove unauthorised forwarding or application access. Re-enable the necessary function only after a clean test.

The selected restriction should apply while the mailbox and its messages remain available for authorised recovery. Record the previous settings and the person responsible for approving restoration.

A login restriction alone may not stop a website using other credentials from sending mail. Conversely, suspending all incoming delivery can disrupt customer replies. If unwanted sending continues, provide support with message IDs, timestamps and the suspected application instead of deleting the entire hosting account.

No. Restrictions and credentials are separate controls. Change compromised credentials, update legitimate devices and inspect other account access methods before returning the mailbox to normal use.

• Tracing a missing message with cPanel Track Delivery
• Configuring an application to send through authenticated SMTP
• Changing a mailbox quota without deleting messages
• Changing an email mailbox password in cPanel

• cPanel: Manage Email Accounts
• cPanel: Track Delivery