Moin moin,
schau dir mal folgende Seite an - ich vermute einfach mal, dass etwas mit deinem MessageParts/ParentPart nicht passt. =>
Messages
Zitat von
RLebeau:
Every message part has a ParentPart property that is set to -1 by default. This is an index to the part that is the PARENT of the current part. This is for nesting parts underneath each other, where -1 means that a part is not nested another another part but is instead located at the top-level of the message. Because of this nesting support, you end up with a variety of different setups depending on what exactly you want to send: ...