Linux
OTRS6 Community - Kernel::System::Email::SMTP Could not send message to server: 550, Start mail input; end with 
OTRS6 Community - Kernel::System::Email::SMTP Could not send message to server: 550, Start mail input; end with .
  
Erro: 12 Kernel::System::Email::SMTP Could not send message to server : 550, Start mail input; en…