Dovecot: no shared cipher

Tim W.

• December 16, 2017 15:43

I have a new install, and some devices aren't able to check their email (not accounts, devices). For example, I can check my email on my laptop, but my phone can't login. Another client can check his email on his phone, but not his computer. This is an example of the error in the mail log: Dec 16 15:16:38 noc dovecot: pop3-login: Disconnected (no auth attempts in 0 secs): user=<>, rip=50.103.120.54, lip=208.86.158.64, TLS handshaking: SSL_accept() failed: error:1408A0C1:SSL routines:SSL3_GET_CLIENT_HELLO:no shared cipher, session=<5JP6oXtgJ4AyZ3g2> Everything I have found points to the cipher list, but I'm not sure where to begin with editing the list. This is the current cipher list: ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256 The SSL protocol is TLSv1.2 Any help would be greatly appreciated. Tim

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  Tim W.

  • December 16, 2017 20:51

  I tried to edit the post to follow the forum guidelines better, but it wouldn't let me. Here is more info: /etc/redhat-release:CloudLinux Server release 6.9 (Igor Volk) /usr/local/cpanel/version:11.68.0.20 /var/cpanel/envtype:standard CPANEL=release

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  cPanelMichael

  • December 18, 2017 15:32

  Hi Tim, You can find more information on this topic at: Outlook 2016 Sending Email Fails After Cipher Suite Update Thank you.

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  Tim W.

  • December 19, 2017 01:18

  Thank you! Tim

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