Public x As Outlook.Application
Public inboxMailFolder As MAPIFolder
Public junkMailFolder As MAPIFolder
Public namespc As NameSpace
Public fso As FileSystemObject
Public f As TextStream


Sub MailAbuseMacro()

    Set fso = New FileSystemObject
    Set x = ThisOutlookSession.Application
    Set namespc = x.GetNamespace("MAPI")
    Set inboxMailFolder = namespc.GetDefaultFolder(olFolderInbox)
    Set junkMailFolder =
namespc.GetDefaultFolder(olFolderDeletedItems).Folders("junk")
    Set f = fso.CreateTextFile("C:\test.txt", True)

    Dim msg As MailItem
    Dim senderDir As String
    Dim i As Integer
    i = 1

    For Each msg In inboxMailFolder.Items

        senderDir = msg.from 'this property doesn't exist. Is there any
similar?

        If (Not IsValidAddr(senderDir)) Then
            msg.Move junkMailFolder
        End If

    Next msg


End Sub




///////////////////////////////////////////////////////////

Dentro de las propiedades del objeto MailItem, exite una 
que lleva por nombre "SenderName", la cual se refiere al 
campo del remitente del mensaje.


  Dim myol As Outlook.Application
  Dim myNameSpace As Outlook.NameSpace
  Dim myFolder As Outlook.MAPIFolder
  Dim myItems As Outlook.Items
  Dim mensaje_ol As Outlook.MailItem  
  Dim Carpeta As Outlook.MAPIFolder

   
  Set myol = CreateObject("Outlook.Application")
  Set myNameSpace = myol.GetNamespace("MAPI")
   
  Set myFolder = myNameSpace.Folders("Nombre_Propietario")
  Set Carpeta = myFolder.Folders("Nombre_Bandeja_Entrada")
  
  For Each mensaje_ol In Carpeta.Items
    MsgBox mensaje_ol.SenderName
  Next mensaje_ol

end sub

Espero que le sea de ayuda.

///////////////////////////////////////////////////////////

>-----Mensaje original-----
>Hola,
>
>Alguien sabe si es posible en Outlook conseguir la 
direccion de e-mail de la
>persona que mando un mensaje a traves de alguna propiedad 
del objeto
>MailItem?
>
>Estoy haciendo un macro en Outlook para filtrar mensajes 
de Spam. He puesto
>parte del codigo abajo:
>
>Gracias de antemano.
>
>Un saludo
>
>Dani
>
>-----------------------
>El codigo es mas o menos asi:
>
>
>Public x As Outlook.Application
>Public inboxMailFolder As MAPIFolder
>Public junkMailFolder As MAPIFolder
>Public namespc As NameSpace
>Public fso As FileSystemObject
>Public f As TextStream
>
>
>Sub MailAbuseMacro()
>
>    Set fso = New FileSystemObject
>    Set x = ThisOutlookSession.Application
>    Set namespc = x.GetNamespace("MAPI")
>    Set inboxMailFolder = namespc.GetDefaultFolder
(olFolderInbox)
>    Set junkMailFolder =
>namespc.GetDefaultFolder(olFolderDeletedItems).Folders
("junk")
>    Set f = fso.CreateTextFile("C:\test.txt", True)
>
>    Dim msg As MailItem
>    Dim senderDir As String
>    Dim i As Integer
>    i = 1
>
>    For Each msg In inboxMailFolder.Items
>
>        senderDir = msg.from 'this property doesn't 
exist. Is there any
>similar?
>
>        If (Not IsValidAddr(senderDir)) Then
>            msg.Move junkMailFolder
>        End If
>
>    Next msg
>
>
>End Sub