Fedora has been part of an GPG sks service for a number of years running
off of keys.fedoraproject.org
. Last year, there were a number of attacks
made on the service which due to its 'write-only' nature makes it
impossible to clean up  . When the attacks came up, and it was clear
it was not easily fixable, we moved keys to a proxy only mode. However this
mode has not been too stable and caused other issues.
Fedora Infrastructure has tried to figure out ways to run a service
replacement, but currently has not found one which we can with the
resources we have available. We plan to turn off and decommission
We currently recommend people to use https://keys.openpgp.org/
Stephen J Smoogen.