Recent Synapse versions have been advertising the
Synapse requires that a list of trusted key servers are specified in order to
provide signing keys for other servers in the federation.
This homeserver does not have a trusted key server configured in
homeserver.yaml and will fall back to the default of ‘matrix.org’.
Trusted key servers should be long-lived and stable which makes matrix.org a
good choice for many admins, but some admins may wish to choose another. To
suppress this warning, the admin should set ‘trusted_key_servers’ in
homeserver.yaml to their desired key server and ‘suppress_key_server_warning’
In a future release the software-defined default will be removed entirely and
the trusted key server will be defined exclusively by the value of
Since Librehosters may want to trust the same key servers, I was wondering whether everyone is using the default (matrix.org) or something else.