If you are being spammed from a certain IP address, you may block the IP address from accessing your mail server here. Check the box SMTP MAIL address must exist if it uses a local domain.Check the box Do not allow message relaying.Select Relay Control on the left, in the Security Settings sub-section.Relay Control is used to prevent mail that is not TO or FROM a local user from being accepted in MDaemon.
#Mdaemon mail server authentication how to
For specific information on how to configure ESMTP Authentication for your mail client please consult the Help system for your mail client.
Select IP Shielding on the left, in the Security Settings sub-section.To configure this open MDaemon and from the menu bar: The best way to prevent MDaemon from relaying mail is to use Domain/IP pairs.
MDaemon 10.x: Protecting MDaemon from relaying mail KBA-02020 MDaemon 10.x: Protecting MDaemon from relaying mail