This is what I get for error:
An unknown error has occurred. Subject 'test 7', Account: 'pophm.sympatico.ca', Server: 'smtphm.sympatico.ca', Protocol: SMTP, Server Response: '421 Cannot connect to SMTP server 65.55.172.251 (65.55.172.251:25), connect error 10060', Port: 587, Secure(SSL): Yes, Server Error: 421, Error Number: 0x800CCC67