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Xen or OpenVZ VPS? http://hostingfu.com/article/xen-or-openvz Technical Discussion about OpenVZ vs. XEN memory handling. http://forums.vpslink.com/xen/2675-xen-vs-openvz-swap-space.html VPS Hosting. http://vpslink.com/

Dump and restore of a database in PostgreSQL is simple: Dump: $ pg_dump dbname > outfile Restore: $ psql dbname < infile References PostgreSQL 8.1.13 Documentation – Chapter 23. Backup and Restore

Realtime File System Replication On FreeBSD http://phaq.phunsites.net/2006/08/11/realtime-file-system-replication-on-freebsd/ DRBD http://www.drbd.org/ CSync2 http://oss.linbit.com/csync2/ – http://linux-ha.org/DRBD Setup of high availability NFS servers http://linux-ha.org/HaNFS Logical Volume Manager (Linux) http://en.wikipedia.org/wiki/Logical_Volume_Manager_(Linux) LVM2 vs MD IBM General Parallel File System http://en.wikipedia.org/wiki/General_Parallel_File_System NAS: SMB a NFS SAN: Xsan

View your /usr/local/etc/imapd-ssl file for the following lines: COURIERTLS=/usr/local/bin/couriertls … TLS_CERTFILE=/usr/local/share/imapd.pem So now we now that the certificate is stored in the following file: /usr/local/share/imapd.pem Another important file is: /usr/local/etc/imapd.cnf This file stores information for certificate generation: RANDFILE = /usr/local/share/imapd.rand

Problem How to make SpamAssassin learn which emails are HAM and SPAM? Solution Use sa-learn utility which enables to teach SPAM and HAM to SpamAssassin. First though you must learn which user is running the amavisd process. # ps aux