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Topics - bertalanimre

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Other modules / DNS setup for LAN webserver
« on: February 09, 2021, 01:28:14 pm »
Hello Forum,

I'm new to Zentyal, but definitely looked promising. Was using ClearOS till now, but as it is now, I'm unable to do 2 things right now and I need your help.

I've installed Zentyal 7 for a PC that acts as our firewall. Our ISP also gave a router, so the Network is something like this:

Code: [Select]
WWW ---> ISP Router ---> Zentyal ---> LAN PCs via DHCP
We have a few servers, we wish to reach from the outside and on a different route (local route) from the inside. Just an example:
  • If Bob wants to log in to from home, he should be coming from the ISP, so he receives the IP for from the web. He should be forwarded based on the domain name towards a specific server on the LAN.
  • Now, if Bob is in the office and want's to log on to the same webapplication, he shouldn't be going thru the internet, only Zentyal who should be forwarding Bob directly to the server on the same LAN. Right now, Bob is unable to connect, unless we hardcore tell his PC via /etc/hosts the LAN IP and domain name.

I was looking at DNS server settings (module activated) and I believe I've made the right steps
  • Added new domain ""
  • Domain IP Addresses were kept as they are (Zentyal servers External and internal IPs)
  • Under Hostname I've added "cloud" with the LAN IP address of the server (no alias)
  • Added "cloud" to Name Servers too just for good measure
  • No Mail Exchanger, TXT record or Services were added
  • Also, it is enabled to be "Dynamic domain" in the DHCP settings (dynamic domain:, static domain: Same as Dynamic Domain)

The DHCP also has the "local Zentyal DNS" set for primary nameserver (no secondary was enabled)

Now, I don't know if I've missed something, but ...... AAAAND as I was writing this post, I've figured out, that what I was missing for the LAN part to work is the "Search Domain" in the DHCP common options to "". Enabled that to and now, I can connect to the local servers. HOWEVER, not my external servers are unreachable who are installed on VPSs all round the world and reachable via the same domain. Example:,, etc.... What did I set wrong in Zenty, so every "" name is being processed locally and if not found, then does not goes on towards the net? (transparent DNS cache is enabled)

The 2nd issue is mabye the cause of the 1st one, but no matter if I forward 80, 443 ports via the firewall from the external NIC towards the LAN IP of the server, it get's ignored and Google Chrome just sais: ERR_ADDRESS_UNREACHABLE. While clearly the server is online, I can reach it now from a local PC, but not from home.

May I get a little assistance please?  ;D

Email and Groupware / Shared calendar
« on: May 26, 2017, 02:43:09 pm »
Hey Forum,

With Zentyal 5 how do you create a shared calendar? I wish to have a calendar shared with some users but I have no idea how to do that. I'm using Thunderbird as client.
Also Jabber... I've enabled Jabber for all the users, downloaded Pidgin, logged in with the users, but somewhy they can't see each other or send message in Pidgin. Why could that be? Do I need to create rooms first? If yes, then how do I do that? Or maybe I should use a different chat client?  :-\

Thanks in advance!


Hey Guys!

Please help me if I'm correct, but with the help of Microsoft Management Console, can I create group policy to install software on remote Windows clients in the domain? If the answer is yes, then where shall I put the exe or msi files on the servers?

Thanks in advance!


Installation and Upgrades / PPPoE function in Zentyal 5.0 ?
« on: January 05, 2017, 01:57:48 pm »
Hello Forum,

I've been shocked after coming back to Zentyal from being away for a few years and find out, PPPoE is no longer available to set up an internet connection.
Can you confirm me please that there is no option to do this anymore or if there is, then how can I resolve this issue?

Best Regards:

Hey there All!

I think, the title tells all. I want to connect with Thunderbird to Zentyals OpenChange but as connecting to an Exchange. I have problems connecting it because IDK the EWS (Exchange Web Service ) link and Thunderbirds addon (ExQuilla) can't find it either. Any tipps?

Installation and Upgrades / SOGo login, IP and domain name
« on: August 21, 2014, 09:57:39 am »
Hy there!

I have a question. When I try to log in to SOGo webmail, then after pressing login the URL swaps to Since the clients doesn't know yet, the hostname, or domain ( we don't use AD yet, it is just planned ) I would like to tell SOGo, NOT TO SWAP the URL from the IP to the Example:
I want: https://192.168.X.X/SOGo
I don't want:

Where can I set SOGo to do this?

Installation and Upgrades / Getmail + Zentyal instead of fetchmail
« on: August 15, 2014, 08:39:44 am »
Hello Guys!

I have a question about getmail. Have anyone tryed to use it under zentyal instead of the builtin fetchmail? My main issue is that fetchmail whenever it copyes the mail from the source mailbox to the zentyal mailbox it removes the "unread" flag and it appears as read message. But that is not good for me ATM. As far as I've learned getmail doesn't check the read-unread flag, instead it uses the message ID and compares that to the local mailbox to see if a message has to be downloaded or not. Or maybe you guys know a better thing for it?

Waiting for your tipps boys.


Hello fellow Forumers!

I vahe a very annoying yet must solve problem. My zentyal mail server is in a DMZ VLAN network and working awsome with OpenChange and fetchmail. However, from time to time, the server get's disconnected or just simply unreachable from all other VLAN, but it's own. For example:
Let's say server IP is This is the DMZ VLAN network.
Clients are in They can see out to the internet thrue a few switches and our firewall. In the firewall, we set up all the VLAN and permiting, denying some services from VLAN to VLAN. Mail server can communicate to the clients with the usual mail ports + SSH and webadmin surface. On the server firewall ( in Zentyal ) I've set up an allowance for allowing ( for example SSH ) SSH port from the IP range. And still, from time to time, the server disappears from the network and comes back after a few minutes. Variable from 2 minutes, to 2-3 hours.

I have no clue what triggers this issue, but if you have any suggestion or advice, please let me know. This is very urgent.


Installation and Upgrades / [SOLVED] SSH after network change
« on: August 11, 2014, 11:48:36 am »
Hey guys!

I have a server with SSH enabled and the original IP address was 192.168.1.anything. Now the server was moved to 192.168.50.anything. My problem is: Everything works fine except for SSH. Somehow nobody can connect to the server via SSH ever since it was moved to a different IP range. Even if I set firewall to allow any to any in all ranges. Webmanagement works, IMAP works. I don't know what to do now.

Installation and Upgrades / Set firewall to default
« on: August 08, 2014, 01:23:09 pm »
Hy guys!

How can I set back the firewall to default? Somehow I can't connect to the server with SSH thrue firewall. ( firewall is set OK ).


I recently have noticed an error when users try to log in to SOGo webmail. Here is what I can see in the /var/log/soog/soog.log file:
Code: [Select]
Jul 29 9:16:40 sogod[27309]: [ERROR] <0x0x7f4d2525d878[NGLdapAttribute]> could not convert value of objectSid to string
Jul 29 9:16:40 sogod[27309]: [ERROR] <0x0x7f4d25360e08[NGLdapAttribute]> could not convert value of objectGUIDto string
192.168.1."xxx", - - [29/Jul2014:09:16:40 GMT] "GET /SOGo/ HTTP/1.1" 302 0/0 0.040 - - 0 - - [29/Jul2014:09:16:40 GMT] "GET /SOGo/imre.bertalan HTTP/1.1" 302 0/0 0.003 - - 0 - - [29/Jul2014:09:16:40 GMT] "GET /SOGo/imre.bertalan/view HTTP/1.1" 302 0/0 0.003 - - 0

Additional info: A colleague of my modified the access of SOGo webinterface to make it accessable only with "https". Could that make tha problem?

Installation and Upgrades / Where did External mail recieve go?
« on: July 16, 2014, 03:33:12 pm »
Hey Guys!

I've just noticed that the external mail recieve is missing from the Mail module in Zentyal 3.5! Where did it go? I've read a few words that sais fetchmaili is still in and working, but how and where?


Installation and Upgrades / Import/Export users at reinstall
« on: July 07, 2014, 09:29:14 am »

THe question is obvious. I'm planing to install a server with around 50-60 users. When I add all of them then I would like to make a kind of backup in case if I have to re install it. I saw a few topics about it, but haven't tried them yet. Can you please provide me the best way to export, then later import the users? Obviously the domain name / mail address would stay the same. I just don't want hours to be taken only by adding the users one by one all the time when I have to. A nice script to add them from a cvs file would be very nice for example. But please excuse me and my newbieness. I'm not that familiar with servers and server methods yet.


Installation and Upgrades / DDoS, UDP Flooding?
« on: June 19, 2014, 10:58:52 am »
Hy Guys,

Just wondering how can I defend my Zentyal server from DDoS attacks and UDP flooding. Can you suggest me something?

Hy there Everybody!

Once again I need your help. I'm setting up a Zentyal mail server ATM and what I need is to fetch all the mails from an external account to the current users account. I've installed the following modules:
Backup, Network Configuration, Firewallm DNS Services, NTP Services, Users and Computers, Mail Service, File sharing and....., Antivirus, Certification Authority, Web Server, OpenChange Server, OpenChange Web Mail, User Corner

Went through all the settings at 1st boot. After that I've made the user with no quota ( just in case if mails are too mutch ). Then I've set up OpenChange. User can log in to the SOgo surface and it works like a charm. However when modify the user with the administrator to retrieve mails from external accounts and fill up the required informations, the user can't see any mails from the specified mailbox inside his new one. Is there any way to force the fetchmail?

What do I think?
  • Could be autentication problem. The external mailbox is accessable from 143 and 993 IMAP ports with a 3rd party application like Thunderbird. Username, password and server address is 100% OK.
  • Maybe fetchmail is not starting? How often is it checking the mailbox for incoming mails? As often is it set on the SOgo surface to check for incoming mails?
  • Or what if I set the external account for the user WITH the user from the usercorner?

Waiting for your reply boys. I need it very mutch and ASAP!


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