Keyserver timeout

[Patrick O'Callaghan]

Trying to add a GPG key from a well-known keyserver (keys.mit.edu) but
I'm getting timeouts:

$ gpg --keyserver keys.mit.edu --recv <xxxxxxx>
gpg: requesting key <xxxxxxx> from hkp server keys.mit.edu
gpg: keyserver timed out
gpg: keyserver receive failed: keyserver error

Same thing happens with other keyservers such as keys.gpg.org.

Googling for this throws up multiple reports of it being caused by a
firewall blocking access to port 11371 (the hkp protocol). I tried
opening this port but it makes no difference.

Suggestions welcome.

poc