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<p>Hi @all,</p>
<p>I hope someone can answer my questions. I have been using Kolab since Kolab 3 in recent years. Now, I would like to switch to Kolab 4, as it is the future. Currently, I use Kolab behind a mail server. This means that Kolab receives emails from some providers (Mittwald, Hetzner, GMX, and Web.de) via fetchmail. In the future, I would also like to add some Gmail and Outlook.com accounts. All emails are sent via their own providers. I use sender_dependent_relayhosts with Postfix for this.</p>
<p><br />I would now like to recreate this with Kolab 4.<br />To do so, I installed a VM with Debian 12 on my Proxmox server and connected the VM to the internet via an Opnsense firewall (another VM).<br />After some issues, Kolab4 is now running stably on a single K3s node (as my company grows, I will add at least two more nodes to increase availability).</p>
<p><br />To add fetchmail, I had to add another deployment set/pod with a fetchmail image and a persistent volume for my fetchmailrc. Additionally, fetchmail must send emails to another mail server (Postfix Pod?), not localhost.</p>
<p><br />Sender_dependent_relayhost should also work, as I will add my own transport_maps, similar to what I am doing now. I have to add it to the Postfix Pod.</p>
<p>Another Problem i found, was that Kolab4 dosn't share Mailfolders with serval Domains.<br />Let me a little explane: I'm using Domain-a.org for all my User-Accounts. So my users have to login as <a href="mailto:user@domain-a.org">user@domain-a.org</a>. But they have some shared Mailboxes like <a href="mailto:info@domain-b.org">info@domain-b.org</a>, <a href="mailto:info@domain-c.com">info@domain-c.com</a> and so on. And the shared Mailboxes are not shown in Roundcube as they are loged-in as <a href="mailto:user@domain-a.org">user@domain-a.org</a>. ( Access for the Folder is granted/added ).<br />Only if a add a Useraccount with <a href="mailto:user@domain-b.org">user@domain-b.org</a>, then this user can see the shared mailbox info@domain-b.org. <br />Is there any way to get this work in Kolab4, because it works fine in Kolab16 witch i'm using at the moment.</p>
<p>And last but not least:<br />I also have a Nextcloud-Storage @hetzner. It would be great, if i could add this as a Storage to Roundcube.<br />For this, i found <a href="https://github.com/nicofrand/Roundav">https://github.com/nicofrand/Roundav</a> , a fork of Rounddrive but both not working.<br />I also found a solution for adding some webdav-accounts with chwala and kolabfiles. I tested it in Kolab16 and it works but it was slow.<br /></p>
<p>So, my questions are:</p>
<p>Are I'm on the right way with fetchmail & sender_dependent_relayhosts or are there better solutions?</p>
<p>How did I get Access to shared folders across domains?</p>
<p>and how can I get access to my Nextcloud-Server for my attachments & Documents?</p>
<p>Thanks a lot for your replys</p>
<p>Josef</p>
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