SSL (Secure Socket Layer) is used for encryption and decryption, processing of S/MIME signed or encrypted mails, generation of certificates, and more. To use it on Windows (32 and 64 bit versions), download the OpenSSL tools from code.google.com/p/openssl-for-windows/downloads/list. Uncompress it anywhere you like and start it by double-clicking the openssl.exe executable in the \bin folder. ... Read more
Make a backup of the old key and certificate file mv /etc/ssl/certs/dovecot.pem /etc/ssl/certs/dovecot.pem.old mv /etc/ssl/private/dovecot.key /etc/ssl/private/dovecot.key.old Create the new SSL certificate openssl genrsa -out /etc/ssl/private/dovecot.key 1024 openssl req -new -x509 -key /etc/ssl/private/dovecot.key -out /etc/ssl/certs/dovecot.pem -days 730 Restart Dovecot: service dovecot restart
Linux user quotas can be edited with the commands edquota or setquota on the shell. While edquota opens the quota settings in an editor like vim, setquota allows you to specify the quota settings on the command line. Example for disabling the quota for the user "testuser": setquota -u testuser 0 0 0 0 -a ... Read more
More and more internet access providers are closing port 25 to reduce spam except for connections to their own mail servers. If you run your own email server and have problems connecting to it on port 25, you can enable port 465 (SMTPS) in postfix as a workaround. Edit the /etc/postfix/master.cf file: nano /etc/postfix/master.cf and ... Read more
In case of configuration changes do not get written to disk in ISPConfig 3, you should enable the debugging mode. Login to ISPConfig and go to System > Server config > Server (name of the server) > Server and set Logelevl to Debug. Old Versions: If you use an ISPConfig version < 3.0.2, then debugging ... Read more
wrote by Rafael Marangoni, from Suporte Linux team. This article explains how to change the default PostgreSQL Locale. Be careful, because we're considering that you do not have data on the PostgreSQL instance. First, we need to stop the Postgres service (if was not already stopped): service postgresql stop Then we need to remove all ... Read more
There are three ways that an ISPConfig email user can use to change his email password (when he has no client login). Use the Mail user login in ISPConfig Email users can login to ISPConfig with their email address and mailbox password by using the normal ISPConfig GUI login. They will get logged into a ... Read more
wrote by Rafael Marangoni, from Consultoria Linux team. By default, on some distros, PostgreSQL will only accept connections from localhost. When you have only access from localhost (from localhost Apache, by example) everything is ok, but when you need that postgresql accepts connections for other hosts, you need to make some configs. First of all, ... Read more
The templates for the ISPConfig 3 server side configuration files are located in the folder: /usr/local/ispconfig/server/conf/ The templates for the default index pages are in the folder: /usr/local/ispconfig/server/conf/ The templates for the error pages are in the folder: /usr/local/ispconfig/server/conf/error/
Today I tested the log rotation of a Linux server installation and therefore I needed a logfile that was larger than 10 MB. To create such a file of e.g. 11 MB size on the shell, I used this command: dd if=/dev/urandom of=test.log bs=1M count=11 The content of the file is random characters. If you ... Read more