Sending failures are commonly caused by authentication, password, port, quota or reputation problems.
Check in Order #
- Test sending from webmail.
- Confirm the mailbox password.
- Verify the outgoing server and port.
- Enable SMTP authentication.
- Use the full email address as username.
- Check mailbox and account disk quotas.
- Record the complete bounce or error message.
- Check whether only one recipient or all recipients fail.
Bulk Sending #
Important: A normal mailbox is not designed for unsolicited or high-volume marketing email.
Need Help? #
If you still need assistance, open a support ticket through your Vertico client account and include the affected domain or email address, a screenshot of the error, and the approximate time the problem occurred. Never send passwords by email or support ticket.
