To create new SSL certificates for the dovecot pop3 and imap server on Ubuntu, follow these steps: Make a backup copy of the old key and certificate file sudo cp /etc/ssl/private/dovecot.key /etc/ssl/private/dovecot.key.old sudo cp /etc/ssl/certs/dovecot.pem /etc/ssl/certs/dovecot.pem.old Create the new key file openssl genrsa -out /etc/ssl/private/dovecot.key 1024 Create the new certificate file, valid for 2 years ... Read more
If you use a mailserver wil very low ram (< 500 MB) and a slow CPU then it might be nescessary to disable the spam- and antivirus filter functions in ISPConfig 3 as amavisd and clamav might be too heavy for your server hardware. The steps to disable clamav and amavisd are: Edit postfix main.cf ... Read more
As of today, all ClamAV 0.94 or older installs will stop working. The Debian project has not released updates for their current stable release (5.0) yet to solve this, but there is a workaround. The Debain volatile project provides newer clamav versions. The installation steps to install ClamAV 0.95.3 on Debian lenny are: 1) Add ... Read more
This articles describes the renewal of SSL certificates for courier pop3 and imap server. This is nescessary e.g. when the certificates are expired or contain the wrong hostname. First delete the exsiting certificates: rm -f /etc/courier/imapd.pem rm -f /etc/courier/pop3d.pem Then edit the template that contains the details for the ecrtificates so that the hostname in ... Read more