I just upgraded my own ejabberd server from Stretch to Buster and everything's fine.
I'll put your config on my test machine and see if it causes any problems there, in the meantime you could provide the crash.log from your server. Best wishes -- .''`. Philipp Huebner <debala...@debian.org> : :' : pgp fp: 6719 25C5 B8CD E74A 5225 3DF9 E5CA 8C49 25E4 205F `. `'` `-
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