With the Backup @Mail function you can create a backup of your User Dir and if applicable your Database. The system will ask for your User Dir, but this value is usually correct, so no need to change it. Your SQL dir will be automatically generated. If this is incorrect, or empty, search where mySQL stores your files and give a path like /path/to/mysql/data/Database_Name. The databasename is quite important, or else the system will create a backup of ALL the databases on your server.
Choose which Backup Type you want to use. Just copying files is possible, however Tar/Gzipping the files will make the Backup respectively smaller. To Tar / Gzip files up you need to have a valid Tar executable, and supply the Tar Location + options when asked for. The ideal situation will look like this: /usr/bin/tar cfvz. Notice: If you take away the 'z' option, your output filename will still have tar.gz as an extension.
Last but certainly not least you'll have to specify a Backup Directory. By default this is /tmp. We recommend that you change this. It's best to backup to either a different physical hard disk in your server or, if possible, an NFS partition (Network File System). Enter the Directory where you want the @Mail backup. Make sure this Directory is writable for user nobody. To acomplish this 'chown nobody /your/dedicated/Backup/Directory'. When the Backup executes successfully the system will create files like: atmail.time.users.tar.gz and atmail.time.db.tar.gz where time is in seconds since EPOC.