Posts by Akinos

    Hi @momo ,

    thanks for your suggestion! Sadly, it seems like that wasn't the solution. Both your suggested cipher list as well as the one suggested by Mozilla’s generator ( ) for „old“ compatibility did not get rid of all the failed connections from Outlook. We even tried allowing TLS_PROTOCOL="SSL3", that didn't help either.

    At this point, I have to admit I'm pretty out of ideas. I'll try switching from courier to dovecot later to see if that helps any.



    Hi Nuxwin

    root@man1:~# netstat -plunt | grep couriertcpd
    tcp6 0 0 :::995 :::* LISTEN 157/couriertcpd
    tcp6 0 0 :::110 :::* LISTEN 158/couriertcpd
    tcp6 0 0 :::143 :::* LISTEN 174/couriertcpd
    tcp6 0 0 :::993 :::* LISTEN 175/couriertcpd


    I have now taken to test a new I-MSCP
    There I have created a new email address and made some pictures
    Unfortunately, I have found no option to switch Outlook in English
    sorry for my bad english, google translator

    step 1

    Bildschirmfoto 2018-03-05 um 08.57.36.png

    step 2 select pop

    Bildschirmfoto 2018-03-05 um 08.58.03.png

    step 3

    Bildschirmfoto 2018-03-05 um 08.58.31.png

    step 4 enter server address and add account

    Bildschirmfoto 2018-03-05 um 08.59.png

    step 5 check in the console

    Bildschirmfoto 2018-03-05 um 09.00.15.png

    step 6 check in Outlook

    Bildschirmfoto 2018-03-05 um 09.00.png

    step 7 change the port in Outlook

    Bildschirmfoto 2018-03-05 um 09.01.09.png

    step 8 check in the console

    Bildschirmfoto 2018-03-05 um 09.01.26.png

    greeting Akinos

    Hi nuxwin,

    I have re-generated the dhparam file as indicated in the ticket, and restarted the mail server. Sadly, it did not resolve the issue for me.

    This is a log excerpt from the macOS Console application, which matches the log entries on the server side. Hope this helps - and again, thank you for your assistance.

    Hi nuxwin, first of all thanks for the quick response!

    1. Courier
    2. Yes, I use a valid SSL cert and use the correct hostname.
    3. Fetching mail works eventually, it just takes a lot longer than normal. Outlook on Windows or any other Mail client is much faster and doesn't produce all these failed connections.

    I'm happy to provide SSH access to the server if you want to take a closer look.