Joseph Conrad: > Outlook Express error: > > An unknown error has occurred. Account: 'pop.rockymountains.net', Server: > 'smtp.rockymountains.net', Protocol: SMTP, Server Response: '421 ', Port: > 587, Secure(SSL): No, Server Error: 421, Error Number: 0x800CCC67
You mentioned that AVAST is playing man-in-the-middle between the mail application and the mail server. Like this: Outlook Express <=> AVAST <=> POSTFIX. Your logging shows that AVAST hangs up after POSTFIX replies to EHLO (or was it HELO), so this is evidence that POSTIX did not send 421. It would be a safe bet that AVAST was doing that instead. Wietse