Connection refused or incapability to open an SMTP stream. It is often related to firewalls or misspelled domains.

Causes

  • Referencing a connection issue to the remove of SMTP or Mail server.
  • Typically relate to firewalls or misspelled domains.

Fixes

Step 1: Check Configurations

Double check all the configuration.

Step 2: Contact NET

Contact NET support to tell them the issues.