Update KC 8.4.5 to KC 8.6.2


On my debian 9.5 test system with maria db server I got the error message that libmysqlclient18 is missing (kopano-server). I could not load them via apt install -f.
I think the dependencies are checked on non mysql systems.
Said file is offered in the debian oldstable and testing but not in the stable.
Any suggestions Felix ;)


What kind of error message? At installing or at running?

thanks tjoen,

it happens during the installation. I can not install it.

I am not familiar with /bin/deb but it has to be possible to force the installation or to ignore dependency

Thank you that is certain but I do not want it and maybe I have found only one error in the installation routine.
And I’m not a fan of force installations.

The actual error was that due to unfulfilled dependencies kopano-server.deb could not be installed. libmysqlclient18 not found.

Hi @Sinux ,

so did it now work for you?

Hi Felix äähmm @fbartels
I then installed this from the oldstable but that can not be the solution!


for my stable debian version


Hi @Sinux ,

it seems you have the wrong repository configured. Our Debian 9 packages do not have a dependency on libmysqlclient18, but our Debian 8 packages do (hence you are able to fulfill this dependency with oldstable).

thx I’ll check that but not really.

Says libmariadbclient18 in Debian_9.0_x86_64/libkcserver0_8.6.80.1350-0+212.1_amd64.deb/deb://DEBIAN/control:

Package: libkcserver0
Source: kopano
Architecture: amd64
Maintainer: Kopano Development <development@kopano.io>
Installed-Size: 2066
Depends: libc6 (>= 2.17), libcomerr2 (>= 1.01), libgcc1 (>= 1:3.0), libgsoap-kop
ano-2.8.62, libgssapi-krb5-2 (>= 1.14+dfsg), libicu57 (>= 57.1-1~), libk5crypto3
 (>= 1.6.dfsg.2), libkcoidc0, libkcsoap0, libkcutil0, libkrb5-3 (>= 1.6.dfsg.2),
 libmariadbclient18 (>= 5.5.36), libpam0g (>=, libssl1.1 (>= 1.1.0), l
ibstdc++6 (>= 5.2), zlib1g (>= 1:1.2.6)
Section: mail
Priority: optional
Description: The Kopano Server library
 This library contains the central server code which is responsible for handling
 RPC calls from libmapi, loading/storing objects in the database, etc.

thx @jengelh @fbartels
it was the wrong package