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Beim Net Email Client kann es manchmal vorkommen, dass das Email Programm einen Timeout Fehler meldet.

Das kommt dann vor, wenn der aufgeforderte Email-Server nicht rechtzeitig antwortet.

 

Email Fehlermeldung:

Timeout für den Vorgang wurde überschritten

 

 

 

Lösung: beim Email Client kann man die Wartezeit  auf den Email Server erhöhen, indem man den SMTP-Client.Timeout erhöht

email_SmtpClient.Timeout = 60000

 

 

Visual basic Code zum Email Client

Public Function Send_Email(ByVal TO_Email_Address As String, ByVal CC_Email_Address As String, ByVal FROM_Email_Address As String, ByVal FROM_DisplayName As String, ByVal REPLYTOLIST_Email_Address As String, ByVal Attach_File As String, ByVal Password As String, ByVal SMTP_Server_Address As String, ByVal Port As String, ByVal EnableSSL As Boolean, ByVal Subject_Title As String, ByVal Text_Body As String, Optional ByVal Attachements_Path As String = "") As Boolean

        '-------------------------------< Send_Email() >-------------------------------

        '--< Variablen >--

        Dim Result_Send As Boolean = False

        '--</ Variablen >--

 

        '-< check >-

        If TO_Email_Address Like "" Then

            MsgBox("Email Adress TO is empty", MsgBoxStyle.Critical, "Send_Email")

            Return False

            Exit Function

        End If

        If FROM_Email_Address Like "" Then

            MsgBox("Email Adress FROM is empty", MsgBoxStyle.Critical, "Send_Email")

            Return False

            Exit Function

        End If

        '-</ check >-

 

        Dim arrEmpfaenger As Array

        arrEmpfaenger = Split(TO_Email_Address, ";", , CompareMethod.Binary)

        If arrEmpfaenger.Length > 1 Then

            TO_Email_Address = arrEmpfaenger(0)

        End If

 

 

        '----< Email >----

        Try

            '---< Mailobjekt erzeugen und senden >--

            If FROM_DisplayName Like "" Then

                FROM_DisplayName = FROM_Email_Address

            End If

            Dim MailAdress_From As New MailAddress(FROM_Email_Address, FROM_DisplayName)

 

 

 

            Dim MailAdress_To As New System.Net.Mail.MailAddress(TO_Email_Address)

            Dim email_Message As New System.Net.Mail.MailMessage(MailAdress_From, MailAdress_To)

 

 

            '--< add multi addresses >--

            '< TO >

            If arrEmpfaenger.Length > 1 Then

                For iAn As Integer = 1 To arrEmpfaenger.Length - 1

                    email_Message.To.Add(arrEmpfaenger(iAn))

                Next

            End If

            '</ TO >

            '< CC >

            If Not CC_Email_Address Like "" Then

                Dim arrCC As Array

                arrCC = Split(CC_Email_Address, ";", , CompareMethod.Binary)

                For iCC As Integer = 0 To arrCC.Length - 1

                    email_Message.CC.Add(arrCC(iCC))

                Next

            End If

            '</ CC >

 

            '< ReplyToList >

            '*ReplyTo is obsolete

            If Not REPLYTOLIST_Email_Address Like "" Then

                Dim arrReplyToList As Array

                arrReplyToList = Split(REPLYTOLIST_Email_Address, ";", , CompareMethod.Binary)

                For iReplyTo As Integer = 0 To arrReplyToList.Length - 1

                    email_Message.ReplyToList.Add(arrReplyToList(iReplyTo))

                Next

            End If

            '</ ReplyToList >

            '--</ add multi addresses >--

 

            '--< Attach a File >--

            '*add a File to email

            '*Imports System.Net.Mail and System.Net.Mime

            If Not (Attach_File = "") Then

                Dim attachment As Attachment = New Attachment(Attach_File, MediaTypeNames.Application.Octet)

                email_Message.Attachments.Add(attachment)

            End If

            '--</ Attach a File >--

 

            email_Message.IsBodyHtml = True

            email_Message.Subject = Subject_Title

            email_Message.Body = Text_Body

 

            '----< Mailobject >----

            Dim email_SmtpClient As New SmtpClient(SMTP_Server_Address)  'System.Net.Mail.

            email_SmtpClient.UseDefaultCredentials = False  '*either windows login or user-password

            email_SmtpClient.EnableSsl = EnableSSL

            email_SmtpClient.Port = Port

            email_SmtpClient.DeliveryMethod = SmtpDeliveryMethod.Network    'System.Net.Mail.

            email_SmtpClient.Credentials = New Net.NetworkCredential(FROM_Email_Address, Password)

            email_SmtpClient.Timeout = 60000

            '--< Try: Send Mail >--

            Try

                '< send >

                email_SmtpClient.Send(email_Message)

                email_SmtpClient.Dispose()

                '</ send >

 

                'Status_Text = "status=OK /send to:" & TO_Email_Address & " subject:" & Subject_Title

                Result_Send = True

            Catch ex As Exception

                '-< Fehler >-

                Dim sError As String

                If ex.InnerException Is Nothing Then

                    sError = ex.Message

                Else

                    sError = ex.Message & vbCrLf & ex.InnerException.Message

                End If

                MsgBox(sError)

                '-</ Fehler >-

            End Try

            '--</ Try: Send Mail >--

 

            '---</ Mailobjekt erzeugen und senden >--

        Catch ex As Exception

            '-< Fehler >-

            Dim sError As String

            If ex.InnerException Is Nothing Then

                sError = ex.Message

            Else

                sError = ex.Message & vbCrLf & ex.InnerException.Message

            End If

            MsgBox(sError)

            '-</ Fehler >-

        End Try

 

        '----< Mailobject >----

 

        '< Abschluss >

        Return Result_Send

        '</ Abschluss >

        '----</ Email >----

        '-------------------------------< Send_Email() >-------------------------------

    End Function

 

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