Bernd Plagge writes:
Hi,I found the following error message in the system log:Courier-ssl: accept error 1408A0C1 SSL routines: SSL_GET_CLIENT_HELLO: no shared cipherWhat is the reason for this error message? Is it serious? What can/should I do to get rid of it?
This means that the sender failed to negotiate TLS because no shared ciphers were in common. Each time an encrypted connections gets established between two parties, they have to agree on a common encryption parameters.
When Courier is built against OpenSSL (default), the OpenSSL configuration is controlled by TLS_CIPHER_LIST, if Courier is built against GnuTLS, it comes from TLS_PRIORITY.
Most likely, you're using the default configuration which disables low- security ciphers, and the other side can only do low-security ciphers, hence there was no common cipher.
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