Invalid address: 
2018-10-10 15:09:28	CLIENT -> SERVER: EHLO acordia.pt
2018-10-10 15:09:28	CLIENT -> SERVER: STARTTLS
2018-10-10 15:09:28	CLIENT -> SERVER: QUIT
2018-10-10 15:09:28	SMTP ERROR: QUIT command failed: ecurity failure
554 Security failure
SMTP connect() failed.
Obrigado  por expôr o seu interesse. Prometemos ser breves na resposta. 
Mail error: SMTP connect() failed.