Exchange Web Services(EWS)API"To"别名标头

Question

我有一个收件箱设置作为交换, hello@mycompany.com

此外,还有一个别名news@mycompany.com,因此所有发送到该news地址的电子邮件最终都会出现在hello收件箱中.

理想情况下,我希望能够使用EWS告知发送电子邮件的别名.

当我向news@mycompany.comMicrosoft Outlook 发送电子邮件并检查邮件的Internet标头时,To:标题会读取To: Hello <news@mycompany.com>我想要查看的内容.

但是,使用EWS时,当我查看邮件的ToRecipients属性时,报告的电子邮件地址始终是主SMTP地址的电子邮件地址.此外,Webservices.Data.Item 的InternetMessageHeaders属性不包含该To:属性.我似乎也看不到使用EWSEditor检查消息的所有属性的正确地址.

这个论坛帖子的答案似乎表明,

...有关邮件发送到的实际电子邮件地址的信息存储在收件人集合中,您无法在EWS中访问(在exportmessage之外)...

我将如何以编程方式执行此操作,以便找到正确的To:地址？

Answer 1

这对我有用:

    private static string GetToAddress()
    {
        ExchangeService exService = new ExchangeService();
        exService.Credentials = new NetworkCredential("username", "password", "domain");
        exService.Url = new Uri("https://youraddress/EWS/Exchange.asmx");

        ExtendedPropertyDefinition PR_TRANSPORT_MESSAGE_HEADERS = new ExtendedPropertyDefinition(0x007D,MapiPropertyType.String);
        PropertySet psPropSet = new PropertySet(BasePropertySet.FirstClassProperties)
                                    {PR_TRANSPORT_MESSAGE_HEADERS, ItemSchema.MimeContent};

        FindItemsResults<Item> fiResults = exService.FindItems(WellKnownFolderName.Inbox, new ItemView(1));
        foreach (Item itItem in fiResults.Items)
        {
            itItem.Load(psPropSet);
            Object valHeaders;
            if (itItem.TryGetProperty(PR_TRANSPORT_MESSAGE_HEADERS, out valHeaders))
            {
                Regex regex = new Regex(@"To:.*<(.+)>");
                Match match = regex.Match(valHeaders.ToString());
                if (match.Groups.Count == 2)
                    return match.Groups[1].Value;
            }
            return ToAddress;
        }
        return "Cannot find ToAddress";
    }

代码来自:http: //social.technet.microsoft.com/Forums/en-au/exchangesvrdevelopment/thread/1e5bbde0-218e-466e-afcc-cb60bc2ba692