Calendar entries can be added, but are not displayed in Thunderbird (but they are visible in Webmail...)

[fthommen]

Hi,

when I synchronize my calendar, then I can see in nohup.out, that lots of data is synchronized (nohup.out becomes 7.5MB in size and over over 60'000 lines long). However no single entry is shown in Thunderbird (68.10.0 on CentOS 7.7). When I add an entry in the Thunderbird calendar and synchronize, then the entry is removed (aka "not displayed any more") in Thunderbird but I can see it when I log in to OWA/webmail.

Davmail (v5.5.1-3299) is running in server mode on a CentOS 7.7 VM. The firewall is off. The central Exchange server is running version 2013 (afaik).

Can you suggest what I should do to debug this further apart from Thunderbird console and nohup.out? Or do you have an immediate idea about the source of the problem?

Thank you very much in advance

[fthommen]

I have the same issue not only with the Davmail server running on a Linux VM but also with the locally running davmail Java app on a Mac. Adding a calendar entry adds it too OWA but locally it either dsappears immediately or on first "synchronize" and it only reappears on a Thunderbird restart followed by a synchronize.

Anyone having this issue, too?