2024.03.16 17:33:40 SMTP R:504 unsupported AUTH security mechanism   
   2024.03.16 17:33:40 Could not authenticate to SMTP server   
      
      
   Mystic BBS ,User Email Validation make a Error   
      
   Mystic BUG   
      
   Found this:   
   It's because most sensible mail servers do not permit unencrypted AUTH - note   
   that the capability list you receive from the server does not include AUTH -   
   you   
   need to call STARTTLS first, which PHPMailer does automatically. You can't   
   easily do this manually with telnet - use openssl's s_client command to do it   
   better. There's an example in the PHPMailer troubleshooting guide, something   
   like:   
      
   Look Like many Provider Update the Encryption , mystic Does not Being Update   
   .....   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)