One of the mail databases on my client's server is corrupted, or a document in it, well, that's my conclusion after seeing this line in the log:
18/04/2023 17:37:40 Agent 'wAppointmentOpen' error: Instance member UPDATENOTICE does not exist
That's all the info there is...
I checked the mail template that's used for all mail databases, but none of the libraries containing a reference to UpdateNotice has been modified, they are still signed by Lotus Notes Template Development, dating back to 24 September 2013.
Is there any way I can discover which mail database needs fixing?? Luckily, there are only 20 mail dbs or so on this particular server, but imagine there are 1000 users...
We activated HTTP logging, here's what we found in the domlog.nsf database:
POST /Microsoft-Server-ActiveSync?User=user@domain.org&DeviceId=H14223H4T5O627F8S96&DeviceType=iPhone&Cmd=Sync
It's a request originating from Traveler, which is also installed. So, we know the mail database that's involved.