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SmtpResponseType Enumeration

The SmtpResponseType enumeration indicates the status returned from a Simple Mail Transfer Protocol (SMTP) request.

Namespace: Microsoft.Exchange.Data.Transport.Smtp
Assembly: Microsoft.Exchange.Data.Transport (in

public enum SmtpResponseType
public enum SmtpResponseType
public enum SmtpResponseType

Member nameDescription
IntermediateSuccessA 3xx status code.
PermanentErrorA 5xx status code.
SuccessA 2xx status code.
TransientErrorA 4xx status code.
UnknownUnknown status.

Development Platforms

Windows XP Professional with Service Pack 2 (SP2), Windows Server 2003,

Target Platforms

Windows Server 2003