Hello Alexander, there's a slightly off-topic suggestion for you.
Alexander Rehbein wrote on 02.04.2015 11:25: > You told something about an delta. Are diff backups better for me? I want to > do the following: > > I have an Mailserver which should do a full backup every week. It could > happen that I delete an email faulty, so I decided to backup the mails every > hour. This I want do with incr backups. If a mail get lost I can restore > this Mail from the backup archive. > > I've looked in the archive. Sometimes the incr backup is only 20mb, > sometimes 200mb. Perhaps it is an better idea to only backup /var/vmail > directory hourly instead of the full root path. According to your needs, may be there is another possibility apart from stressing your mail server with hourly backups. And, your statement "If a mail get lost I can restore this Mail from the backup archive." is only partly true. If both the mail arrives and is deleted between two incremental backups, it will get lost, too. So what can you do is: use the "always_bcc" feature of your MTA - e.g. if you use dovecot with postfix, have a look at http://www.postfix.org/ADDRESS_REWRITING_README.html#auto_bcc and put it in master.cf in the cleanup process. I assume your backuppc server is physically on another host. There are several possibilities: - send all incoming and outgoing mail of the server to one or several bcc accounts, using fetchmail on the backup host to fetch the mail and deliver it * to local account * to a file, e.g. using procmail - send all incoming and outgoing mail per domain or per user directly to an archive host, which must not be the same as the backuppc host, but can => backup the archive host using backuppc as usual Find attached an example .procmailrc which we use together with one incoming and one outgoing bcc account per server to split important mail from not so relevant ones. If there are several mail processes on the server (content/antivirus filters etc.) make sure you generate the bcc mails only once. The generated files can be gzipped at end of month, and even archived (to fullfill the archiving duty in germany: http://de.wikipedia.org/wiki/E-Mail-Archivierung ) HTH Falko # === ~/.procmailrc === PATH=$HOME/bin:/usr/bin:/bin:/usr/local/bin MAILDIR=$HOME/Mail # Youd better make sure it exists YEAR=`date "+%Y"` MONTH=`date "+%m"` DEFAULT=$MAILDIR/IN-$YEAR-$MONTH # for outgoing control user: # DEFAULT=$MAILDIR/OUT-$YEAR-$MONTH LOGFILE=$MAILDIR/_maillog-$YEAR-$MONTH :0: * ^X-Spam-Status: Yes,.*$ SPAM-$YEAR-$MONTH :0: * ^X-Quarantine-ID: .*$ BADHEADER-$YEAR-$MONTH :0: * ^From: logcheck@ SYSTEM-$YEAR-$MONTH :0: * ^From: root@ SYSTEM-$YEAR-$MONTH :0: * ^List-Id: .*$ MAILINGLIST-$YEAR-$MONTH ------------------------------------------------------------------------------ Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ _______________________________________________ BackupPC-users mailing list BackupPC-users@lists.sourceforge.net List: https://lists.sourceforge.net/lists/listinfo/backuppc-users Wiki: http://backuppc.wiki.sourceforge.net Project: http://backuppc.sourceforge.net/
