We are browsing a mailbox on a 8.0.2 post office using the SOAP API.

For all items opened from sent folder the property "container" contains a single value of "7.EXDEV-GW-DOMAIN.Postamt 1.100.0.1.0.1@16".

This is the id of the "Mailbox" folder. But it should be "19.EXDEV-GW-DOMAIN.Postamt 1.100.0.1.0.1@30" (the id of the sent folder).