c# - ExchangeService with AutodiscoverUrl 从错误的电子邮件地址发送

Question

我正在使用此代码在 winforms 应用程序中通过 Outlook 发送电子邮件。

_exchangeService = new ExchangeService(ExchangeVersion.Exchange2013_SP1);
_exchangeService.AutodiscoverUrl(_sender);
// ...
var email = new EmailMessage(_exchangeService)
{
    Subject = mailMessage.Subject, 
    Body = mailMessage.Body
};
email.ToRecipients.AddRange(mailMessage.To.Select(x => x.Address));
email.SendAndSaveCopy();

我在 _exchangeService.AutodiscoverUrl(_sender); 上设置了一个断点，我可以看到发件人是 customerservice@mycompany.com。但是，电子邮件是“从”登录到 winforms 应用程序的实际用户发送的。例如 person@mycompany.com。

我们已尝试将 Active Directory 设置为“发送为”和“代表发送”，以允许此用户作为 customerservice@mycompany.com 发送，但没有帮助。我们还审查了这封电子邮件的 Exchange Server 日志记录，它显然是“发自”person@mycompany.com 发送的。

在此处的代码示例中，https://msdn.microsoft.com/en-us/library/dd634273 ，他们使用 NetworkCredential。我需要这样做吗？

为什么发件人(Email send FROM)不对？

Answer 1

_exchangeService = new ExchangeService(ExchangeVersion.Exchange2013_SP1);
_exchangeService.AutodiscoverUrl(_sender);
using email = new EmailMessage(_exchangeService)
{
    From = new MailAddress("customerservice@mycompany.com"),
    Subject = subject,
    Body = body
})
{
    //System.Net.Mail.Attachment attachment;
    //attachment = new System.Net.Mail.Attachment("your attachment file");
    //mail.Attachments.Add(attachment);
    message.To.Add(address);//Jess@Jess.com for example
    _exchangeService.Send(message);
};

如果你想要一个发送电子邮件的好方法，我也为你创建了一个静态方法

public static void SendEmail(string subject, string body)
{
    using (var client = new SmtpClient(utilities.EmailHost, 25))
    using (var message = new MailMessage()
    {
        From = new MailAddress(utilities.FromEmail),
        Subject = subject,
        Body = body
    })
    {
        System.Net.Mail.Attachment attachment;
        attachment = new System.Net.Mail.Attachment("your attachment file");
        mail.Attachments.Add(attachment);
        message.To.Add(address);//Jess@Jess.com for example
        client.Send(message);
    };
}