System.Net.Mail.SmtpException public class SmtpException : Exception, ISerializable Documentation public SmtpStatusCode StatusCode { get; set; } public SmtpException() public SmtpException(SmtpStatusCode statusCode) public SmtpException(SmtpStatusCode statusCode, string message) protected SmtpException(SerializationInfo serializationInfo, StreamingContext streamingContext) public SmtpException(string message) public SmtpException(string message, Exception innerException)