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It is possible to configure your firewall via Plesk interface, but if you have a ssh access I recommend writing a iptables script. First of all don’t just use my firewall script, it will block your ssh access and every mailserver access. My users all have their own openvpn key and will access the mailserver …

I had to generate a new openssl certificate, so that the ‘hostname’ in the certificate corresponds to the mail server’s IP in the VPN. Here you can read how to generate a new self-signed certificate using openssl and use it afterward with courier-imap: The box you are using for the certificate generation doesn’t have to …

Moving a already running sugarCRM installation from one server to the other is quite easy, but there are several things to consider. I’ll explain here how I solved this little problem. First of all it is always good to have a backup of both servers, in case you mess something up. moving the database Like …

Mysql is one of the most commonly used database software. There are various reasons for this: well embedded in php, opensource, fast, working with SQL language, etc… For exporting or simply backup’ing your mysql-databases you can use ‘mysqldump‘. That tool should be installed automatically with the mysql installation. Read here how to backup tables, single …