使用MailMessage发送电子邮件将引发以下错误“邮箱不可用” +“处理错误服务器响应”

问题描述

我的asp.net控制台应用程序中有以下代码，可使用Office 365 SMTP服务器发送电子邮件：-

static private void sendemail(ClientContext context,string subject,string body,string to)
        {
            using (MailMessage mail = new MailMessage())
            {
                mail.From = new MailAddress("[e-mail]");
                mail.Subject = subject;
                mail.IsBodyHtml = true;
                SmtpClient smtp = new SmtpClient();
                smtp.Host = "ourorganization-com.mail.protection.outlook.com";
                smtp.EnableSsl = true;
                mail.Body = body;
                mail.To.Add("***@****.net");   
                smtp.Port = 25;
                smtp.Send(mail);
            }

        } 

static void Main(string[] args)
        {
            string s = "******";
            securestring passWord = new securestring();
            foreach (var cc in s)
                passWord.AppendChar(cc);
            using (ClientContext context = new ClientContext("https://****.sharepoint.com/"))

            {

                context.Credentials = new SharePointOnlineCredentials("***@***.onmicrosoft.com",passWord);
                sendemail(context,"test 123","test123 body","***@***.net");

            }
        }

但是smtp.Send(mail);引发以下错误，根据在以下代码中运行上述代码的服务器，我得到了不同的错误：-

错误1

System.Net.Mail.SmtpException: 'Error in processing. The server response was: 4.4.62 Mail sent to the wrong Office 365 region. ATTR35. For more information please go to https://go.microsoft.com/fwlink/?linkid=865268 [HE1EUR01FT009.eop-EUR01.prod.protection.outlook.com]'

错误2

MailBox unavailable. The server response was: 5.7.1 Service unavailable,Client host [165.225.80.126] blocked using Spamhaus. To request removal from this list see https://www.spamhaus.org/query/ip/165.225.80.126 AS(1450) [VE1EUR01FT009.eop-EUR01.prod.protection.outlook.com]

对此有什么建议吗？ 谢谢

解决方法

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