[SmtpFailedRecipientsException.InnerExceptions property 内部异常数组 public SmtpFailedRecipientException[] InnerExceptions { get; } 也可以看看 class SmtpFailedRecipientException class SmtpFailedRecipientsException 命名空间 Aspose.Email.Clients.Smtp 部件 Aspose.Email]