Relays running unsupported Tor versions is a problem we have never
really dealt with in a systematic way in the way. Some of you might
recall that we (with the help of volunteers) tried back in 2019/2020 to
get operators, running an unsupported Tor version, to upgrade but
then we dropped the ball. Alas.
We just started that process again by contacting every relay operator
running an outdated Tor version (any version not 0.3.5.x or 0.4.5.x or
0.4.6.x or 0.4.7.x) by email where possible. Additionally, we created a
wiki page outlining the current process and things we still need to
figure out. On that page we plan to make statistics related to the
EOL relay removal available as well, including the final list of relays
we'll reject. Thus, stay tuned. Feedback, as always, is very much welcome!
Alright, I collected all the fingerprints of relays still running an EOL version (that is, relays running none of 0.3.5.x, 0.4.5.x, 0.4.6.x or 0.4.7.x), which are 449, and prepared a commit to reject those. This rejection will likely happen at some point in the next couple of hours once a majority of directory authorities has picked up that commit.
At the same time I updated the wiki adding all the relay fingerprints of those relays, so we have a public record.
If this is affecting anyone of you, please upgrade your relay to a supported Tor version and get in touch with us (off-list), so we can help you getting the relay unblocked again.