Jason

This phenomenon is causing us a lot of trouble. We are a school and our teachers frequently send emails to contact groups (e.g., parents of a class, colleagues, etc.). As...

That's right, we had that issue with the password in one case. However, in that case, the message in the nextcloud.log is clear.

Hello, we don't always experience the same phenomenon, but only sometimes. Unfortunately, I have not yet been able to reproduce the cases in which it occurs. In principle, we have...

These are contact groups from the Contacts app. I have never been able to reproduce the error myself. But the error occurs with remarkable regularity (once or a few times...

If it helps, I can provide more information. Please ask if you need specific data. The contact groups are all from address books that no user has write access to,...

Here is a very recent case: A teacher wants to inform the parents of his class about today's field trip yesterday afternoon. But the email does not leave the outbox....

Unfortunately, I haven't been able to reproduce the error intentionally. On our development system (which works with a copy of the data from the production system), I get this message...

I tried to track down the problem with Xdebug. It looks as if the system address book is the only address book loaded in nextcloud/lib/private/ContactsManager.php:35. That's strange.

I took another look at this today with Xdebug: It looks to me as if only the system address book is loaded because there is no session with a user....

I can finally reproduce the error and have open an issue: [https://github.com/nextcloud/mail/issues/11209](#11209 )