Procedure

1. Go to IP Filtering → ERS.
   The ERS screen appears.
2. Select the Enable ERS check box.
3. Click a radio button next to one of the following, depending on your level of service, and configure the settings:
   Standard:
   • Default intelligent action: ERS permanently denies connection (550) for RBL+ matches.
   • Take customized action for all matches:
     • SMTP error code: Blocks any connections that have a certain SMTP code. Specify an SMTP code.
     • SMTP error string: Specify the message associated with the SMTP error code.
   Advanced:
   • Default intelligent action: ERS permanently denies connection (550) for RBL+ matches and temporarily denies connection (450) for Zombie matches.
   • Take customized action for all matches:
     • SMTP error code: Blocks any connections that have a certain SMTP code. Specify an SMTP code.
     • SMTP error string: Specify the message associated with the SMTP error code.

     Note The above SMTP error code and error string will be sent to the upstream MTA that will then take the necessary pre-configured actions, such as recording the error code and error string in a log file.

4. Click Save.