Try cheating and edit the file /etc/clearos-release, perhaps?

Nick Howitt wrote:

Try cheating and edit the file /etc/clearos-release, perhaps?

Thank you Nick. Editing /etc/clearos-release and then restore from backup hepled.
Thank you again.

Good. Remember to change it back.

Hello Miroslav,

That's caused by an LDAP issue. The root cause is typically a "disk full" situation or file system error. The quick way around the issue is to restore a recent snapshot from the Configuration Backup app in ClearOS.

Hi Peter,
thank you for your reply. Restore from backup was first thing I have tried, but without success. It writes: The version information in the backup file does not match the version installed on this system. (ClearOS Community release 6.6.0 (Final)). Now I have version 6.7.0.

Please any other sugestions?

Hi;

I have the same problem here ı think. Ihave internal mail server behind the ClearOS but I could not get e-mails from outside of my domain. But I can send e-mail to everyWhere..

Jul 26 16:07:19 gateway postfix/smtpd[27785]: warning: hostname xxx does not resolve to address xxx.xxx.xxx.xx: Name or service not known

Jul 26 16:07:19 gateway postfix/smtpd[27785]: connect from unknown[xxx.xxx.xxx.xx]

Jul 26 16:07:19 gateway postfix/smtpd[27785]: NOQUEUE: reject: RCPT from unknown[xxx.xxx.xxx.xx]: 451 4.3.0 <mailadres@domain.org>: Temporary lookup failure; from=<sender@senderdomain.com> to=<mailadres@domain.org> proto=ESMTP helo=<sender@senderdomain.com>

Jul 26 16:07:19 gateway postfix/smtpd[27785]: disconnect from unknown[213.74.173.83]

Jul 26 16:07:20 gateway postfix/smtpd[27779]: warning: hostname host-xxxx does not resolve to address xxx.xxx.xxx.xx: Name or service not known

Jul 26 16:07:20 gateway postfix/smtpd[27779]: connect from unknown[xxx.xxx.xxx.xx]

Jul 26 16:07:20 gateway postfix/trivial-rewrite[20712]: warning: dict_ldap_lookup: /etc/postfix/imap-groups.cf: Search base 'ou=Groups,ou=Accounts,dc=system,dc=lan' not found: 32: No such object

Jul 26 16:07:20 gateway postfix/trivial-rewrite[20712]: warning: ldap:/etc/postfix/imap-groups.cf: table lookup problem

Jul 26 16:07:20 gateway postfix/trivial-rewrite[20712]: warning: virtual_alias_domains lookup failure

Jul 26 16:07:20 gateway postfix/trivial-rewrite[20712]: warning: dict_ldap_lookup: /etc/postfix/imap-groups.cf: Search base 'ou=Groups,ou=Accounts,dc=system,dc=lan' not found: 32: No such object

Jul 26 16:07:20 gateway postfix/trivial-rewrite[20712]: warning: ldap:/etc/postfix/imap-groups.cf: table lookup problem

Jul 26 16:07:20 gateway postfix/trivial-rewrite[20712]: warning: virtual_alias_domains lookup failure

Please can you check that LDAP is running:

systemctl status slapd.service

Hi;

Here is the results. It says "Configuration directory /etc/openldap/slapd.d does not exits.
does it cause of the problem? This problem happened this morning. Nothing has changed before the error happens

[root@gateway ~]# systemctl status slapd.service

â slapd.service - OpenLDAP Server Daemon

   Loaded: loaded (/usr/lib/systemd/system/slapd.service; enabled; vendor preset: disabled)

   Active: active (running) since Thu 2018-07-26 17:37:10 +03; 1h 48min ago

     Docs: man:slapd

           man:slapd-config

           man:slapd-hdb

           man:slapd-mdb

           file:///usr/share/doc/openldap-servers/guide.html

 Main PID: 5689 (slapd)

   CGroup: /system.slice/slapd.service

           ââ5689 /usr/sbin/slapd -u ldap -h ldap://127.0.0.1/ ldaps:///



Jul 26 17:37:10 gateway.aysis.org systemd[1]: Starting OpenLDAP Server Daemon...

Jul 26 17:37:10 gateway.aysis.org prestart.sh[5672]: Configuration directory '/etc/openldap/slapd.d' does not exist.

Jul 26 17:37:10 gateway.aysis.org prestart.sh[5672]: Warning: Usage of a configuration file is obsolete!

Jul 26 17:37:10 gateway.aysis.org runuser[5676]: pam_unix(runuser:session): session opened for user ldap by (uid=0)

Jul 26 17:37:10 gateway.aysis.org slapd[5687]: @(#) $OpenLDAP: slapd 2.4.44 (Aug 12 2017 06:10:11) $

                                                       mockbuild@build64-1.clearsdn.local:/builddir/build/BUILD/openldap-2.4.44/openld...s/slapd

Jul 26 17:37:10 gateway.aysis.org systemd[1]: Started OpenLDAP Server Daemon.

Hint: Some lines were ellipsized, use -l to show in full.

I have also restored configuration one week before. While restoring It looked like everything worked. Som e-mails from outside reached to our server but after restoring has been complated the same problem acquired again. I have no idea where to start to solve this.

I am not familiar with your set up or with which version you are running. You missed out a space in the command I gave you which would give me an idea. It would be easiest to copy and paste it.

From a terminal you could try:

telnet 127.0.0.1 389

to connect to LDAP locally. If connecting remotely you'll need to use the ClearOS LAN IP and port 636.

To get control of a telnet session do ctl+] then you should get a prompt where you can type "quit".

The configuration file should not exist so it is not an error and ldap looks like it is running OK. not relevant to your problem, but why have you published your LDAP to all interfaces?

When did your system update openldap:

grep ": openldap" /var/log/yum.log

Also have you tried restarting slapd and postfix?

Hi;

May 10 02:28:09 Updated: 1:app-openldap-core-2.4.3-1.v7.noarch

I have rebooted ClearOS but nothing changed. I do not know how i can puslish LDAP to all INterface. Ihave LDAP server which is IP address is 192.168.2.8 (I also connected to Microsoft Active Directory server but now It sayas "Account sistem is offline . How can i connect to LDAPby command from SSH Client. The last time I had the same problem when i tried to connect using command line IT will be solved suddenly ..

I am not an experienced person about ClearOS Just want to solve my problem :

It can connet via telnet.. There is no connection problem..I have still the same error
I do not know where to start digging..

Jul 26 21:18:05 gateway postfix/trivial-rewrite[9811]: warning: dict_ldap_lookup: /etc/postfix/imap-groups.cf: Search base 'ou=Groups,ou=Accounts,dc=system,dc=lan' not found: 32: No such object

Jul 26 21:18:05 gateway postfix/trivial-rewrite[9811]: warning: ldap:/etc/postfix/imap-groups.cf: table lookup problem

Jul 26 21:18:05 gateway postfix/trivial-rewrite[9811]: warning: virtual_alias_domains lookup failure

Jul 26 21:18:05 gateway postfix/trivial-rewrite[9811]: warning: dict_ldap_lookup: /etc/postfix/imap-groups.cf: Search base 'ou=Groups,ou=Accounts,dc=system,dc=lan' not found: 32: No such object

I have no experience of the AD connector and I don't know how it works. To be honest, if you have such a set up with little knowledge I'd have thought a professional Gold or Platinum subscription would be advisable.

Anyway that is the output of:

grep search_base /etc/postfix/imap-groups.cf

grep rootdn.*, /etc/openldap/slapd.conf

Hi;

[root@gateway ~]# grep search_base /etc/postfix/imap-groups.cf

search_base = ou=Groups,ou=Accounts,dc=system,dc=lan

[root@gateway ~]# grep rootdn.*, /etc/openldap/slapd.conf

rootdn      "cn=manager,ou=Internal,dc=system,dc=lan"

[root@gateway ~]#

They tie up OK.

Following PeterB's post, how are you for disk space:

df -h

[root@gateway ~]# df -h

Filesystem                Size  Used Avail Use% Mounted on

/dev/mapper/clearos-root  592G  6.6G  585G   2% /

devtmpfs                  3.9G     0  3.9G   0% /dev

tmpfs                     3.9G     0  3.9G   0% /dev/shm

tmpfs                     3.9G   17M  3.9G   1% /run

tmpfs                     3.9G     0  3.9G   0% /sys/fs/cgroup

/dev/sda1                 497M  228M  270M  46% /boot

tmpfs                     799M     0  799M   0% /run/user/991

tmpfs                     799M     0  799M   0% /run/user/0

[root@gateway ~]# 

I think LDAP is probably OK, but if it is pulling its data from the AD Connector the I have no idea where to start troubleshooting that side. Does the connector look as if it is functioning?