somebody created a new appointment and added a mailinglist as participant. So a lot of people got a lot of mails ... .
However, the appointment was deleted and still mails are send to the mailinglist.

From the mails I can see the entry
X-Originating-Client: USM-EAS

Does this mean the appointment is modified from a mobile device (handy,..) ?

X-Originating-Client: com.openexchange.ox.gui.dhtml

is the normal WEB-gui, right ?

Is there a way to avoid sending information mails, when a appointment was already canceled and some client
stills seems to modify it ?

Thanks and bye, Peer