NFS (Network File System) is a distributed file system protocol developed by Sun Microsystems to share files and folders between Linux/Unix systems. NFS allows us to mount the file system over the local network. NFS uses standard client/server architecture for sharing files and directories between Linux-based systems. This tutorial will help you to set up ... Read more
If you run a firewall on your Linux server and want to use passive FTP connections, you have to define the passive port range in pure-ftpd and your firewall to ensure that the connections don't get blocked. The following example is for pure-ftpd on Debian or Ubuntu Linux and ISPConfig 3. Set Passive Port Range ... Read more
Getmail is a powerful email retrieval program for Ubuntu Linux that can be used to download and store emails from remote mail servers. It supports POP3, IMAP, and SDPS protocols, so you can configure it to work with your current email provider to download messages and store them on your local computer or server. Additionally, ... Read more
A database is a place where you store information. Cassandra is a type of database that is different from most databases because it does not use tables. Cassandra was developed by Facebook in 2008 as part of Facebook’s Open Compute Project. Cassandra is a NoSQL database that combines the speed of a key-value store with ... Read more
Rspamd is a widely used email and spam filtering solution. It consists of a set of rule-based filters, blacklists, greylisting, and also a self-learning Bayes filter. Sometimes, it might happen that the Bayes filter starts to behave oddly and flag the wrong emails. In such a case, you can either try to start passing the ... Read more
The Nginx web server has a max. body size limit of 1 MB for requests as default. This might be too low for file uploads in scripts and you will see the following error message when you try to upload a file: 413 Request Entity Too Large The configuration variable for this option is "client_max_body_size" ... 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
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
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