MS Outlook 2016 secure connection to kopano-gateway

  • Hello guys!
    I wonder is it ever possible to connect to kopano-gateway using Outlook 2016 throw SSL/TLS port 993?
    I had been trying to make it work, but no luck: as far as I remember kopano-gateway cannot proceed TLS-negotiation with Outlook.
    Sorry, but I don’t remember exact record in log about it.
    Does anyone has some general info ontopic?

  • Hmm…

    # SSL protocols to use, space-separated list of protocols
    # (SSLv3 TLSv1 TLSv1.1 TLSv1.2); prefix with ! to lock out a protocol.
    ssl_protocols =  SSLv3 TLSv1 TLSv1.1 TLSv1.2
    # SSL ciphers to use, set to 'ALL' for backward compatibility
    ssl_ciphers = ALL:!LOW:!SSLv2:!EXP:!aNULL

    Should do the trick for SSL connection, not “modern” TLS I guess.