uploading subkeys

Marko Bauhardt (private) marko.bauhardt at mailbox.org
Fri Aug 28 21:15:55 CEST 2015

i have a keyring which contains a master key for certification and 3 sub keys, one for encryption, one for sign and the third one for authentication.
So my question is which key should i upload to a key server. I mean should i upload the master key id via `gpg —send-key <EMAIL>` / `gpg —send-key <MASTERKEY>` or should i send sub key after by  sub key. For example first the encryption key and after that the key for signing, via `gpg -send-key <SUBKEY>!`?

What is the difference between uploading the master key and uploading the sub keys separately? I have the feeling that it make sense to share my public key for encryption and my public key for signing separately.
Which key server do you recommend to use?


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