Hello, we have ispconfig ISPConfig 3.1.14p1, i have check Roundcube version is 1.1.5 i would like to update Roundcube which process should I use? Thanks
Depends on what operating system that host has. Does that OS offer other Roundcube versions? One possibility is to download Rouncube from https://roundcube.net/download/ and install it. But check first ISPConfig supports the version you plan to install.
I do not know. If you want Roundcube version more current than 1.1.5, upgrade that host to Debian 9 Stretch. Then you get Roundcube 1.2.3. and there ISPConfig does support that roundcube version. Support for Debian Jessie end next year, so you should do the upgrade before that anyway. https://wiki.debian.org/LTS You can get an even newer version of Roundcube by upgrading that Debian 9 to Debian 10, there Roundcube is version 1.3.8. and on Debian Buster ISPConfig does support that version of Roundcube.