Listener with SSL and Oracle

Hello,
I am struggeling with setting up Oracle with SSL on Linux

My listener.ora looks like this:
WALLET_LOCATION =
  (SOURCE =
    (METHOD = FILE)
    (METHOD_DATA =
      (DIRECTORY = /tmp/wallets)
    )
  )

LISTENER =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCPS)(HOST = metallica)(PORT = 2484))
  )

SSL_CLIENT_AUTHENTICATION = FALSE
SSL_CIPHER_SUITES = (SSL_RSA_WITH_NULL_MD5, SSL_RSA_WITH_NULL_SHA)
SSL_VERSION=3.0

When I start the listener ist throws an "ORA-28862: SSL connection failed".
When I remove the ssl_cipher and ssl_version from the listener.ora I can
start it, but my DB instance doesn't register with the listener
Could someone pleeeeeeaaaaase help me?

regards
Lars