MailKit C#ImapClient.Connect（）到Office 365生成异常；根据验证程序，“远程证书无效”；

我使用Imap和MailKit连接到Office 365时遇到问题。根据验证过程，我得到的例外情况是

远程证书无效

// For demo-purposes, accept all SSL certificates
imapClient.ServerCertificateValidationCallback = (s,c,h,e) => true;

// For demo-purposes, accept all SSL certificates
imapClient.ServerCertificateValidationCallback = (s,c,h,e) => true;

代码：

// For demo-purposes, accept all SSL certificates
imapClient.ServerCertificateValidationCallback = (s,c,h,e) => true;

根据文档，我可以设置客户端接受所有证书，但我不想这样做

// For demo-purposes, accept all SSL certificates
imapClient.ServerCertificateValidationCallback = (s,c,h,e) => true;

Microsoft Office 365设置应正确：

// For demo-purposes, accept all SSL certificates
imapClient.ServerCertificateValidationCallback = (s,c,h,e) => true;

// For demo-purposes, accept all SSL certificates
imapClient.ServerCertificateValidationCallback = (s,c,h,e) => true;

---

还有其他人经历过并解决了这个问题吗？

我最终运行了以下代码，并在方法中设置了一个断点

// For demo-purposes, accept all SSL certificates
imapClient.ServerCertificateValidationCallback = (s,c,h,e) => true;

ServicePointManager.ServerCertificateValidationCallback = delegate (object s, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors)
{
    return true;
};

发送的证书如下所示：

// For demo-purposes, accept all SSL certificates
imapClient.ServerCertificateValidationCallback = (s,c,h,e) => true;

certificate.Issuer
"CN=avast! Web/Mail Shield Root, O=avast! Web/Mail Shield, OU=generated by avast! antivirus for SSL/TLS scanning"

停止Avast电子邮件保护后，一切又开始工作

// For demo-purposes, accept all SSL certificates
imapClient.ServerCertificateValidationCallback = (s,c,h,e) => true;