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我有一个在 WinXP 机器（IIS 5.1）上开发和单元测试的 web 应用程序项目。它已发布到 Win2003Server (IIS 6.0)。该应用程序的一项功能会发送一封带有“回复”标题的电子邮件（以下是片段）。在 IIS 5.1 机器上，Reply-To 正确显示在标题中。从 IIS 6.0 PC 发送时，标头不包含回复地址（见下文）：

    Public Shared Sub SendEmail_withReplyTo(ByVal emailfrom As String, _
                                        ByVal emailto As String, _
                                        ByVal vbody As String, _
                                        ByVal vsubject As String, _
                                        ByVal msgcc As String, _
                                        ByVal msgbcc As String, _
                                        ByVal sReplyTo As String)
    Dim MyMsg As New MailMessage
    ErrorTrap.ErrorMsg = Nothing
    With MyMsg
        .From = New MailAddress(emailfrom)
        .Headers.Add("Reply-To", sReplyTo)
        .To.Add(emailto)
        If msgcc.Length > 0 Then
            .CC.Add(msgcc)
        End If
        If msgbcc.Length > 0 Then
            .Bcc.Add(msgbcc)
        End If
        .Subject = vsubject
        .IsBodyHtml = True
        .Body = vbody
    End With
    Try
        Dim smtp As New SmtpClient
        smtp.Send(MyMsg)
    Catch ex As Exception
        ErrorTrap.ErrorMsg = Nothing
        ErrorTrap.ErrorMsg = ex.ToString
    End Try
End Sub

以下Internet 标题是从 MS Outlook 2003 - 查看 - 选项粘贴的：

从 JOHNXP 机器（带有 IIS 5.1 的开发 PC）发送的有效回复：

Return-path: <Service@zipeee.com>
Received: from JohnXP (unverified [10.10.30.66]) by mail.cbmiweb.com
(Rockliffe SMTPRA 9.2.0) with ESMTP id <B0003406093@mail.cbmiweb.com>;
Mon, 28 Jun 2010 15:16:25 -0400
Message-ID: <B0003406093@mail.cbmiweb.com>
Reply-To: terriadams@cox.net
MIME-Version: 1.0
From: Service@ZIPeee.com
To: johna@cbmiweb.com
Date: 28 Jun 2010 15:17:57 -0400
Subject: Regarding your Ad #153949: Yard sale in vienna va June 12 at 8am
Content-Type: text/html; charset=us-ascii
Content-Transfer-Encoding: quoted-printable

缺少从 MOJITO 机器（带有 IIS 6.0 的 2003 服务器）发送的回复：

Return-path: <Service@zipeee.com>
Received: from MOJITO (unverified [10.10.30.14]) by mail.cbmiweb.com
(Rockliffe SMTPRA 9.2.0) with ESMTP id <B0003405883@mail.cbmiweb.com>;
Mon, 28 Jun 2010 13:37:53 -0400
Message-ID: <B0003405883@mail.cbmiweb.com>
MIME-Version: 1.0
From: Service@ZIPeee.com
To: johna@cbmiweb.com
Date: 28 Jun 2010 13:39:25 -0400
Subject: Regarding your Ad #153949: Yard sale in vienna va June 12 at 8am
Content-Type: text/html; charset=us-ascii
Content-Transfer-Encoding: quoted-printable

我什至在 Win2003 机器上设置了 VStudio2008 并在上面代码中的断点处停止，以确保邮件实际上是正确构建的，并在标题中添加了“回复”（确实如此）。然而，当到达 Outlook 时，来自 MOJITO 服务器的邮件在标题中缺少“回复”。

是否还有其他配置问题会阻碍实际代码尝试执行的操作？

4

1 回答 1

5

这是我为解决此问题所做的更改：

Dim MyMsg As New MailMessage
With MyMsg
        .From = New MailAddress(emailfrom)
        .ReplyTo = New MailAddress(sReplyTo)    'new code that fixed the problem
        '.Headers.Add("Reply-To", sReplyTo)     'old code that works on WinXP IIS 5.1

我从 Scott Mitchell 的这篇精彩文章中发现了这种替代编码方法：

“在 ASP.NET 2.0 中发送电子邮件：回复、优先级和已读回执”

似乎任何一种方法都应该有效，但现在是继续前进的时候了。

于 2010-06-29T21:51:42.530 回答