Adam Back lists the following mailing lists. also see this part of interesting history: https://bitcointalksearch.org/topic/who-is-this-annoying-adam-back-guy-225463
The cryptography moderated crypto mailing list (mostly low social significance tech discussion) archive
The coderpunks list is dead try the cypherpunks-moderated list. (Old coderpunks archives can be found here archive)
bluesky global-scale distributed storage mailing list bluesky
The p2p-hackers list
The steganography mailing list
The ukcrypto mailing list, crypto politics in the UK
http://www.cypherspace.org/adam/