Outlook 2010, 2013 can't work with IMAP server using recommended strong ciphers list

The problem: when IMAP server is configured to use the following TLS/SSL settings:

Ciphers: AES128+EECDH, AES128+EDH

Protocols: exclude SSlv2, SSLv3

(STARTTLS only), then Outlook 2010/2013 fails to establish secure connection. I have to allow weaker ciphers at a cost of probable endangering the overall network security.

is it possible to configure Outlook of mentioend version to honor the mentioned cipher(s), or my own option is to recommend users to switch to more capable email client?

Thanks.


August 18th, 2015 6:36am

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