Articles by 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.

• Installing SugarCRM OpenSource Edition On Debian 4.0 (Etch)

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

  Installing SugarCRM OpenSource Edition On Debian 4.0 (Etch) SugarCRM is a webbased CRM solution written in PHP. SugarCRM is available as an OpenSource edition and a ClosedSource version. For a detailed overview of the different editions, have a look at the SugarCRM website. In this tutorial I will describe the installation of the OpenSource edition on Debian 4.0. With the modules My Portal, Calendar, Activities, Contacts, Accounts, Leads, Opportunities, Cases, Bugtracker, Documents and Email, SugarCRM OpenSource Edition offers everything that can be expected from a CRM solution.

  read more... | view as pdf

• I need an SSL certificate for my website. What do I have to do?

  Author: Till Brehm • Tags: ispconfig • Comments: 5

  Activate the option SSL on the tab Basic of the web and go to the tab SSL. Provide your information there (State/county and Organizational unit are optional"). Please leave the fields SSL Request and SSL Certificate empty. Choose Create Certificate under Action and then click on Save.Afterwards, if you go to the tab SSL again, you will find the Certificate Signing Request (CSR) under SSL Request. Copy the CSR. With this CSR you can apply for an SSL certificate at companies like Verisign (www.verisign.com), Baltimore (www.baltimore.com), Entrust (www.entrust.com), Geotrust (www.geotrust.com) or InstantSSL (www.instantssl.com).

  read more... | view as pdf

• Quota does not work under SuSE 8.2!

  Author: Till Brehm • Tags: ispconfig, linux • Comments: 0

  On a standard SuSE 8.2 installation the quota module is not loaded into the kernel which is why quotaon -avug gives back an error. Load the quota module manually with insmod quota_v1 and insmod quota_v2 To have those modules loaded on every bootup of the system please insert modprobe quota_v1 and modprobe quota_v2 in /etc/init.d/boot.local.

  read more... | view as pdf

• How do I start the X server in Suse 9.2 when the graphic card is working work in text mode?

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

  To start the X server from a text mode session, execute the command: startx

  read more... | view as pdf

• How do I make my MySQL server use TCP connections instead of Unix sockets?

  Author: till • Tags: mysql, ispconfig • Comments: 0

  Comment out the option skip-networking in the file my.cnf which typically lies under /etc or /etc/mysql. Then restart your MySQL server: /etc/rc.d/init.d/mysql restart or /etc/init.d/mysql restart With netstat -ta you can check if MySQL is reachable via TCP.

  read more... | view as pdf

• On sending emails, I get the following error message: "Relaying denied".

  Author: Till Brehm • Tags: postfix, sendmail • Comments: 0

  There are two solutions for this problem: 1) You configure your MTA to allow authentication via SMTP (SMTP-Auth). Your users then have to change settings in their email clients (e.g. Outlook), i.e., they have to activate Server requires authentication. 2) You install "POP-before-SMTP" or poprelayd on your server. Your users then have to fetch emails first before they are allowed to send emails for a restricted period of time (mostly 30 min.).

  read more... | view as pdf

• How do I configure Postfix to use SMTP-Auth?

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

  Some useful links: http://www.thecabal.org/~devin/postfix/smtp-auth.txt http://www.mandrakesecure.net/en/docs/postfix-sasl.php http://postfix.state-of-mind.de/patrick.koetter/smtpauth/index.html http://www.howtoforge.com/perfect_setup_debian_sarge http://www.howtoforge.com/howto_postfix_smtp_auth_tls_howto

  read more... | view as pdf

• One of the users on the system has a CatchAll-email address. He receives all emails, even those for users of another site...

  Author: Till Brehm • Tags: ispconfig, postfix • Comments: 0

  One of the users on the system has a CatchAll-email address. He receives all emails, even those intended for users of another site on the same server. The MTA on the server is postfix. Please check if the domain of the users that receives all emails is the same as the domain $mydomain in /etc/postfix/main.cf. If this is the case, change $mydomain and run postfix reload on the shell. You should never enter a domain that is used for a virtual site on the server as $mydomain in /etc/postfix/main.cf!

  read more... | view as pdf

• What virus scanner is used by ISPConfig 2?

  Author: Till Brehm • Tags: ispconfig, security • Comments: 0

  ISPConfig 2 uses ClamAV (http://www.clamav.net) as virus scanner and the E-mail Sanitizer (http://www.impsec.org/email-tools/procmail-security.html) as content filter.

  read more... | view as pdf

• How do I configure Sendmail for SMTP-Auth?

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

  Some helpful links: http://www.sendmail.org/%7Eca/email/auth.html http://www.jonfullmer.com/smtpauth/ http://www.joreybump.com/code/howto/smtpauth.html http://server.1und1.com/root_server/bs/suse72/howtos/1.html http://info.ccone.at/INFO/Mail-Archives/redhat/Jan-2002/msg02936.html http://www.howtoforge.com/howto_sendmail_smtp_auth_tls

  read more... | view as pdf