exchange协议 java邮件返回错误401

用exchange协议发送邮件
返回错误401 一般为用户名与密码错误

    ExchangeClient exchangeClient = new ExchangeClient.ExchangeClientBuilder()
                .hostname("email.****.com.cn") //这里是正确的服务器名字
                .exchangeVersion(ExchangeVersion.Exchange2010)
                .username("s********u") //此处其实不用写邮箱@尾缀  也不用加域
                .password("121****111")
                .subject("主题")
                .message(str)
                .attachments(filePath)
                .recipientTo("4****")
//                .recipientBcc(reBcc)
                .recipientCc(reTcc)
                .host("*****.21")
                .port(8090)
                .build();