Outbound emails don't work

TCP port 25 is blocked by default to prevent abuse.

If you intend to use your Onidel server to send emails, please submit a support ticket to request that the port be opened. Be sure to select the relevant service in the ticket form and provide a clear explanation of your intended email usage.

Please note that we take IP reputation seriously and strictly prohibit any spam-related activity.

Updated on: 16/06/2025