Hello, I run an instance of sendmail and I have run into an issue where a server I am attempting to send e-mail to is deferring our messages due to a TLS handshake error that is due to our MTAs not being able to agree on a cipher. The error message is :
error:1408A0C1:SSL routines:SSL3_GET_CLIENT_HELLO:no shared cipher I am currently using the following ciphers: CipherList=ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:AES:CAMELLIA:DES-CBC3-SHA:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!MD5:!PSK:!aECDH:!EDH-DSS-DES-CBC3-SHA:!EDH-RSA-DES-CBC3-SHA:!KRB5-DES-CBC3-SHA After one of the more recent openssl vulnerabilities were uncovered (I forget which one it was) I had found the above cipherlist as the recommended set up on a couple of sites. Due to the issue I am having sending mail to this host and the fact that I can't find the above cipherlist anywhere anymore, I am wondering if that's still the case. What is the currently recommended Cipherlist? What are you all using? Thanks in advance. Corey
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