[Moderator Edit: Click here to see our response to the issue reported on this thread.]
Last week, after the update to cPanel/WHM 68.0.9, we updated the cipher suites for all services including Exim and Dovecot. Today, I heard from a client using Win 7 and Outlook 2016 that she was unable to send or receive email. Her webmail was working fine.
Outlook was giving her the error:
and after restarting the services, she was able to receive email, but still can't send without getting the error regarding encryption type.
The SSL protocols in Dovecot are set to the same they were before the update:
In Exim, we tried going back to:
and:
but neither helped.
Is there some other setting, or some other service, that would be preventing Outlook 2016 from sending mail because of the encryption type?
Last week, after the update to cPanel/WHM 68.0.9, we updated the cipher suites for all services including Exim and Dovecot. Today, I heard from a client using Win 7 and Outlook 2016 that she was unable to send or receive email. Her webmail was working fine.
Outlook was giving her the error:
We reverted the cipher suite for Dovecot and Exim to:error (0x800CCC1A) : 'Your server does not support the connection encryption type you have specified. Try changing the encryption method. Contact your mail server administrator or Internet service provider (ISP) for additional assistance.'
Code:
ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA:ECDHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA256:DHE-RSA-AES256-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:!DSS
The SSL protocols in Dovecot are set to the same they were before the update:
Code:
TLSv1 TLSv1.1 TLSv1.2
Code:
+no_sslv2 +no_sslv3 +no_tlsv1
Code:
+no_sslv2 +no_sslv3 +no_tlsv1 +no_tlsv1_1
Is there some other setting, or some other service, that would be preventing Outlook 2016 from sending mail because of the encryption type?
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