After update to obsidian Horde Active Sync does not work any longer

Hi,

I know that this might not be directly related to Obsidian but I have serious proiblems with my plesk installation.
I have upgraded to Obsidian some days ago and since about 2 days I cannot receive and send eMails using Horde with ActiveSync enabled.

Since I am using EAS to sync mails, calandar and contacts on my android phone and Windows PC (using Outlook and Mail app) this is quite bad.
The problem is not mailserver related as IMAP accounts work OK and Webmail through Horde is also...

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