Protocol SMTP Server response: 5305.7.0 Must issue a STARTTLS command first!
Insufficient information provided in the error message generated by MSN O.E. Error message advises: Message could not be sent because the Server rejected the Sender's email address.ISP is Sympatico.Protocol SMTP Server response: 5305.7.0 Must issue a STARTTLS command first.Q: What is the protocol, and to 'Whom' is the STARTTLS command sent?1 person needs an answerI do too
February 2nd, 2011 6:25pm

Your server wants TLS encryption and you haven't enabled it in the account properties.The client sends the STARTTLS command to the server. See this: http://en.wikipedia.org/wiki/Transport_Layer_SecurityBrian Tillman [MVP-Outlook]--------------------------------https://mvp.support.microsoft.com/profile/Brian.TillmanIf a reply helps, please vote it as helpful. If a reply solves the issue, please mark it as an answer.
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February 2nd, 2011 11:49pm

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