Articles by Till Brehm

Till Brehm

About Till Brehm

Over 20 years of experience as a software developer and Linux system administrator. Till Brehm is the founder and lead developer of the ISPConfig hosting control panel software (since 2000) and he founded HowtoForge in 2005 as a place to share Linux knowledge with other Linux enthusiasts.

  • Error messages during installation

    apache Author: Till Brehm • Tags: • Comments: 0

    During the installation process I get the following error messages though the respective programs are installed on the server: iptables: command not found httpd: command not found useradd: command not found apachectl: command not found This means that the programs mentioned are not in the path of your Linux installation. Please type echo $PATH on your command line, and make symbolic links to the programs in one of the directories that is in the path. For example, you can create a symbolic link to the program /path/to/apachectl in the directory /usr/bin by going into the directory /usr/bin and typing the following:

    read more... | PDF view as pdf

  • How will my existing Apache installation be influenced by the installation of ISPConfig 2?

    apache Author: Till Brehm • Tags: • Comments: 0

    The ISPConfig 2 Apche webserver is installed in parallel with your existing Apache installation. The ISPConfig 2 apache is only used for the controlpanel. The hosted webpages are served by the Apache that ships with your linux distribution. This means you do not have to compile special modules into your Apache in order to work with ISPConfig 2. You can compile Apache and PHP the way you like. The ISPConfig 2 installer comments out the PHP settings in your httpd.conf. PHP can be later enabled for each web separately in the ISPConfig 2 web interface.

    read more... | PDF view as pdf

  • Error messages during uninstall

    apache Author: Till Brehm • Tags: • Comments: 0

    shell-init: could not get current directory: getcwd: cannot access parent directories: No such file or directory This is normal. The program /root/ispconfig/uninstall deletes its own parent directory (/root/ispconfig) and thus cannot find it anymore. Nevertheless the uninstall will be completed. Just ignore the error message.

    read more... | PDF view as pdf

  • What spam filter is used by the ISPConfig 2 system?

    apache Author: Till Brehm • Tags: • Comments: 0

    ISPConfig 2 uses the popular spam filter SpamAssassin (http://www.spamassassin.org). Beyond which score are emails treated as spam?The SPAM score can be set for every mail account individually, the default score is 5.0 points (SpamAssassin's default value).

    read more... | PDF view as pdf

  • What happens to spam?

    apache Author: Till Brehm • Tags: • Comments: 0

    In Version 2.x of the ISPConfig you can specify if spam should be delivered to the recipient ("Accept"; the subject will be rewritten to indicate spam so that email filtering can be done by the recipient's email client) or if it should be deleted.

    read more... | PDF view as pdf

  • What does the mailscanner do to email attachments?

    apache Author: Till Brehm • Tags: • Comments: 1

    Attachments with suspicious file extensions (e.g. exe) will be renamed automatically: e.g., USELESS_EYE_CANDY.EXE would be renamed to USELESS_EYE_CANDY.DEFANGED12345-EXE, so that one cannot open the attachment thoughtlessly by double-clicking. The attachment first has to be saved to the hard disk and to be renamed to USELESS_EYE_CANDY.EXE before it can be opened. Note: The mailscanner feature is not the same as the antivirus.

    read more... | PDF view as pdf

  • What is the difference between complete and partial deinstallation of the ISPConfig 2 system?

    apache Author: Till Brehm • Tags: • Comments: 0

    Partial deinstallation means that only the ISPConfig 2 system itself will be uninstalled, not the objects created by it (web sites, users, DNS records, etc.). On complete deinstallation also the objects created by the systems (web sites, users, DNS records, etc.) will be uninstalled. Thus, the server is reset to its original state.

    read more... | PDF view as pdf

  • I cannot reach the ISPConfig 2 system on port 81.

    apache Author: Till Brehm • Tags: • Comments: 0

    Please check if you have tried to reach the system over the right protocol (https or http). If this is the case please verify that the ISPConfig 2 system started before (with ps aux on the command line, or just restart the ISPConfig 2 system: /etc/rc.d/init.d/ispconfig_server restart (RedHat/Mandrake) respectively /etc/init.d/ispconfig_server restart (SuSE)). If this still does not work, then most probably your firewall (iptables or ipchains) is blocking port 81.

    read more... | PDF view as pdf

  • Is there a logfile in ISPConfig 2?

    apache Author: Till Brehm • Tags: • Comments: 0

    The ISPConfig 2 log is /home/admispconfig/ispconfig/ispconfig.log. The system logs which command was executed in which line in which script and if the command was successful (Status: INFO) or not (Status: WARNING). If you encounter problems with ISPConfig 2 please have a look into the logfile and see if there are warnings. Also have a look into the logfiles under /var/log. If you cannot solve the problems on the basis of the logfiles and want to contact our support by email, please do not forget to send suspicious messages from the logs along with your email.

    read more... | PDF view as pdf

  • Some services are shown as "Offline" in the ISPConfig though they are running on the server.

    apache Author: till • Tags: • Comments: 3

    The ISPConfig checks the status of the services on localhost (IP: 127.0.0.1). It may be that some of your services only allow connections to specific IP addresses and not 127.0.0.1 (in Apache this is done with the Listen directive). If you allow connections to localhost the status will be shown correctly in the ISPConfig. Another possibility is that the affected services do not run on the standard port intended for it.

    read more... | PDF view as pdf

Page 22 of 24