Am 16.01.2015 um 12:24 schrieb Oliver Welter:
Hi Folks,
after adding TLSv1.2 to by TLS options a lot of Outlook users complaint about connection errors, openssl s_client and Thunderbird works fine.
I found some posts about this but none of them had a real solution on this - I meanwhile disabled TLSv1.2 which made the Outlook users happy.
I run dovecot 2.2.13, OpenSSL 1.0.1j 15 Oct 2014
ssl_cert =
The certificate is from Comodo using sha256.
Any idea?
Oliver
there is no "Outlook", please do a exact debug what Outlook and Windows Version, disable TLSv1.2 is a bad idea, my bet goes on your ssl_cipher_list, try this
# SSL ciphers to use ssl_cipher_list = ALL:!LOW:!SSLv2:!EXP:!aNULL
or search list archive and www for other better solutions and general dovecot ssl configs
Best Regards MfG Robert Schetterer
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