Exchange 日历文件夹中的幻像邮件答案

【问题标题】：Phantom messages in Exchange Calendar folderExchange 日历文件夹中的幻像邮件
【发布时间】：2015-05-22 23:09:25
【问题描述】：

我正在开发一个 IMAP 客户端，并针对 Microsoft Exchange 服务器对其进行测试。当我选择Calendar邮箱时，UID SEARCH提示邮箱中有邮件，但UID FETCH取不到：

S: * OK The Microsoft Exchange IMAP4 service is ready.
...
C: 38 SELECT "Calendar"
S: * 13 EXISTS
S: * 0 RECENT
S: * FLAGS (\Seen \Answered \Flagged \Deleted \Draft $MDNSent)
S: * OK [PERMANENTFLAGS (\Seen \Answered \Flagged \Deleted \Draft $MDNSent)] Permanent flags
S: * OK [UIDVALIDITY 37122] UIDVALIDITY value
S: * OK [UIDNEXT 190] The next unique identifier value
S: 38 OK [READ-WRITE] SELECT completed.
C: 39 UID SEARCH OR UNSEEN FLAGGED
C: 40 UID SEARCH SEEN UNFLAGGED SINCE 19-Oct-2014
S: * SEARCH
S: 39 OK SEARCH completed.
S: * SEARCH 90 183
S: 40 OK SEARCH completed.
C: 41 UID FETCH 90,183 (ENVELOPE INTERNALDATE FLAGS BODY.PEEK[])
S: 41 OK FETCH completed.

我认为Calendar 是某种虚拟邮箱，但这种行为对我来说没有意义——如果不可能FETCH 服务器返回UID SEARCH 中的消息uid，为什么？有没有办法获取这些消息，或者使用 IMAP 以某种方式操纵它们？

更新：升级到 2010 SP3 后，Exchange 服务器似乎改变了主意。现在它至少返回一些响应FETCH 命令：

C: 120 UID FETCH 773,948 (ENVELOPE INTERNALDATE FLAGS BODY.PEEK[])
S: * 16 FETCH (ENVELOPE (NIL "Retrieval using the IMAP4 protocol failed for the following message: 773" (("Microsoft Exchange Server 2010" NIL NIL ".MISSING-HOST-NAME.")) NIL NIL (("██████████" NIL "██████████" "██████████")) NIL NIL NIL NIL) INTERNALDATE "05-Mar-2015 17:22:02 +0000" FLAGS (\Seen) BODY[] {783}
S: <783 bytes omitted>
S:  UID 773)
S: * 17 FETCH (ENVELOPE (NIL "Retrieval using the IMAP4 protocol failed for the following message: 948" (("Microsoft Exchange Server 2010" NIL NIL ".MISSING-HOST-NAME.")) NIL NIL (("██████████" NIL "██████████" "██████████")) NIL NIL NIL NIL) INTERNALDATE "11-Mar-2015 17:56:04 +0000" FLAGS (\Seen) BODY[] {747}
S: <747 bytes omitted>
S:  UID 948)
S: 120 OK FETCH completed.

消息如下所示：

MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
From: Microsoft Exchange Server 2010
To: ███████████ <████████@██████████.com>
Subject: Retrieval using the IMAP4 protocol failed for the following
 message: 773
Content-Transfer-Encoding: quoted-printable

The server couldn't retrieve the following message:

Subject: "████ █████ ███████ ██ ████ ███ █████ ███████.. ███ ███ ██████ ███=
██!"
From: "███████████  ██████████" ("/O=3D████████/OU=3D████████ █████████████=
█ █████ (███████████████)/CN=3D██████████/CN=3D███████████  █████████████")
Sent date: 3/5/2015 5:22:02 PM

The message hasn't been deleted. You might be able to view it using either =
Outlook or Outlook Web App. You can also contact the sender to find out wha=
t the message says.=

【问题讨论】：

服务器说 13 EXISTS，所以 FETCH 1:13 (ENVELOPE...) 应该返回一些东西。但是 UID FETCH 90 也应该如此。我真的只是在建议一种方法来绕过服务器错误。

标签： exchange-server imap

【解决方案1】：

听起来像是服务器错误。 Exchange“实施 IMAP”以便能够在评估投标时勾选所需的复选框，这已经不是什么秘密了。您还会在其中看到其他错误。

获取该邮箱据称包含的所有 UID 的列表并尝试逐个获取它们以查看其中至少一些是否返回一些可用值可能会很有趣。但是，考虑到这是一个名为“日历”的邮箱，很可能它只是一些随机的 Exchange 数据导出，只能通过 MAPI 才有意义。随机谷歌搜索结果为https://technet.microsoft.com/en-us/library/aa998606%28v=exchg.150%29.aspx，这表明可以将 Exchange 配置为以各种格式提供这些日历数据。也许您的服务器“配置错误”。

TL;DR：这是交换。不要在上面浪费时间。

【讨论】：