> On 28/10/2019 16:12 Fourhundred Thecat via dovecot <[email protected]> > wrote: > > > When my client connects, I see this in my log: > > dovecot: imap-login: TLSv1 with cipher ECDHE-RSA-AES128-SHA (128/128 > bits) > > Whereas, when client connects to my postfix server, I see: > > Anonymous TLS connection established from * TLSv1 with cipher > ECDHE-RSA-AES256-SHA (256/256 bits) > > how can I tell dovecot to use AES256, instead of AES128 ? > > is this set by ssl_cipher_list ? Here are my current values (defaults) > > # doveconf ssl_cipher_list > ssl_cipher_list = > ALL:!kRSA:!SRP:!kDHd:!DSS:!aNULL:!eNULL:!EXPORT:!DES:!3DES:!MD5:!PSK:!RC4:!ADH:!LOW@STRENGTH > > # dovecot --version > 2.3.4.1 > > thanks,
Perhaps your client does not support it? Also, you could try the *default* cipher list (unset ssl_cipher_list), which is reasonable. Also make sure you have 'ssl_prefer_server_ciphers=yes', so that the server-side priority list is used. aki
