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It largely depends on how your server is setup, if your server rejects mail from hosts without a valid dns entry then yes you need to setup dns. If it doesn't then you don't necessarily need to setup dns although I think there are still benefits for doing so outside of a mail context and often inside it too

Ya may be you face this warning But my 2nd command suggestion will not produce any warning find /tftpboot -name '*.bkp' -mtime +7 -type d -print | xargs /bin/rm -rf The reason of above warning is rm -rf unable to handle list of directories

Hi, Is it possible to take snapshot of a mirrored logical volume, when I tried it show's notification "Snapshots and mirrors may not yet be mixed." Thanks, Eldo

ulimit is simply too low

Hi, It waits for your input. You should start typing ldap commands (like those in the ldif you use), to select the dn you want to change, the changetype action etc. When done press Ctrl-D to exit Regards

Also run 'top' in batch mode from 04:45 - 04:55, output every minute to files named by time.

Within a firewall server to defend yourself directly you would probably want snort-inline, which turns snort from an ids to an ips. I've not had too much experience with it over recent years, but certainly you can run it on your generic hardware firewall. What is worth saying though is that a significant percentage of attacks can be filtered out with iptables alone by looking at connection limiting, tarpit destinations and similar,...

Assuming the input is a single character and you are using bash Code: if [[ "${input#[0-9]}" = '' ]]; then echo 'input is a numeral' else echo 'input is not a numeral' fi

Hi, There really is no comparison in my opinion, which you'll soon notice also. Nagios is still there, the same as the standalone. In Groundwork it's only integrated in a lot of more tools, like the visual effects, the JBoss environment to create and link your own pages. In my opinion Groundwork just adds a lot of value to Nagios, not without the cost of needed resources, but it's worth it in my opinion. Only to think about the...

Oh yes, I am actually using Dans in one of my sites. So it should be easier for me to change to Dans with little effort. Let me see if this works. The homepage says it is able to filter https URLs. Quote: # The URL filtering is able to filter https requests. I hope this works for me. I will, though, have to change some of my iptables rules as well. Will have to remove DNAT and use masquerading.