similar to: dhcp lease-time

I'm having great difficulty trying to change server on my home LAN. At present 192.168.2.2 is my server, running CentOS-5.6 and connecting to an ADSL modem. I want to change server to another CentOS machine, 192.168.2.5 . The problem is that I cannot get the computers on the system to forget the old server, even when it is completely disconnected, and the new server is connected to the modem.

I'm trying to install spamassassin on a postfix/dovecot server, running CentOS-6.4, following the instructions at <http://wiki.centos.org/HowTos/Amavisd>. I think I have taken all the steps indicated, and the configuration seems to pass the tests suggested, although the response is much more sparse than that described: ------------------------ [tim at alfred ~]$ telnet localhost 10024

I have a 1.5TB Western Digital hard disk (WD15EADS-00R6B0) on my CentOS-5.7 server, which has become incredibly slow for some operations, eg rsync, BackupPC archive, e2fsck, although it seems to work fine for ordinary file operations, and "smartctl -a /dev/sdb" does not report any errors. For example, running "e2fsck -p /dev/sdb5" on a 250GB partition on this disk took over 24

Is there any point in running NetworkManager on a server? The IP addresses of the two server NICS are fixed (192.168.1.2 and 192.168.2.2 .) I'm not clear if it is necessary in some way to run NM on a CentOS system? -- Timothy Murphy e-mail: gayleard /at/ eircom.net tel: +353-86-2336090, +353-1-2842366 s-mail: School of Mathematics, Trinity College, Dublin 2, Ireland

I've been getting a few avahi-daemon errors in /var/log/messages, eg ------------------------------- Jan 11 00:40:24 helen avahi-daemon[12732]: Invalid query packet. Jan 11 00:40:29 helen last message repeated 17 times ------------------------------- (This is

Has anyone succeeded in installing CentOS-6.0 by PXEboot. If so, would you say how you did it, please. I tried (on an HP MicroServer), but gave up in the end and used a USB stick installation instead. But I'd be very interested to know how to do it, for the future. Unfortunately I didn't keep a proper note of my PXEboot attempt, but IIRC the problem was that install.img was not found,

Does anyone know if the program stunbdc, which prints one's IP address, is available in CentOS-5? It comes with the libnice package in Fedora-11. ------------------------------ [tim at rose ~]$ stunbdc -4 stun.ekiga.net Server address: 75.101.138.128 port 3478 STUN transaction started (timeout 600ms). STUN unknown: 0 mandatory attribute(s)! Received 88-bytes STUN message No

I've been following the instrunctions in <http://wiki.centos.org/HowTos/Amavisd> for installing Amavisd, Clamav and SpamAssassin on top of postfix/dovecot . Dovecot is working fine, but I want to deal with spam email. (I am using sendmail/dovecot with procmail and spamassassin on another server, but decided to go over to postfix on this server when I saw it is now the CentOS default.)

I'm almost completely ignorant about samba on Windows machines, In particular I know nothing about Windows permissions, if that is relevant here. I am running BackupPC on a CentOS-5.3 machine. It works perfectly for backing up Linux folders, but I have great difficulty extending it to Windows clients. To be precise, I have a share called "EA Games D" on a machine running Windows XP

Is there any way of turning off the fetchmail warning ---------------------------------- fetchmail: Warning: the connection is insecure, continuing anyways. (Better use --sslcertck!) ---------------------------------- which I get when fetching imap mail from my college department? I know they should get a root certificate, but I'm told they are looking into it, but that could take forever.

I wonder if anyone has CentOS-6 working on an HP MicroServer? I'm having a problem with the graphics driver for the Radeon HD 4200 graphics card. CentOS-5.6 is working fine on this machine; but at present I only have CentOS-6 running in text mode. The graphics card as given by "/sbin/lspci -m" is ------------------------------- 01:05.0 "VGA compatible controller"

I bought a very cheap server yesterday - an HP ProLiant micro server for 160 euro (280 euro with 120 cashback, for some reason). But I was surprised when I opened the box to find it didn't come with keyboard or mouse, and doesn't have the old keyboard/mouse sockets, but requires USB versions. Is that the norm nowadays? Is it possible to convert the old keyboard/mouse plugs? Also there is

Is there a web-interface to dovecot under CentOS-6? I want to create a top-level folder (ie at the same level as Inbox) but this doesn't seem to be possible from KMail running on a remote Fedora-6 laptop. I was browsing through the dovecot wiki, and I saw some pictures which seemed to be from a dovecot GUI, but I could not find the name of this program. Alternatively, can I simply create

I'm trying to setup email on a new server running CentOS-6.2 (x86_64), but for some reason email is going to /var/spool/mail/ despite the fact that my .procmailrc starts ------------------------------- DEFAULT=/var/spool/mail MAILDIR=/home/tim/Maildir/ SHELL=/bin/sh DROPPRIVS=yes ------------------------------- and I have ------------------------------- MAILER(smtp)dnl MAILER(procmail)dnl

Anyone got this working over a LAN under CentOS? The instructions claim it is easy to connect after pressing the WPS button on printer and router. Sadly, I don't see a WPS button on my Linksys WRT54GL router. When I press the WPS button on the printer the WiFi icon flashes, but I don't see any attempt to connect in /var/log/messages on my CentOS-5.5 server. Any advice or suggestions

I'm running CentOS-6 on an HP MicroServer (since this morning) and I'd like to open an non-standard port, for use on a laptop attached to the internet through the server. Do I have to explicitly add an iptables rule? If so, and I want to open (say) udp port 500 , what command should I give? I've always used shorewall in the past, and will probably do so now if the default firewall

I want to clone a small (80GB) disk on my CentOS server to a large (1.5TB) disk, as smart has been giving me warnings of unreadable sectors. Both disks are Western Digital, and WD has a WD version of Acronis True Image. I'm not sure whether to use this or Clonezilla. My worry with Acronis is that I want to keep the original disk, and I'm not sure from the documentation if True Image

I have a strange problem on a CentOS-5.8 machine. I can only login as root. If I try to login with one of the user's names, it hangs for a long time. I thought it hung forever, but I just found that I do login after "su tim" after 5 minutes. It seems that the problem lies in repeated messages in /var/log/messages --------------------------- May 3 12:14:13 helen su: nss_ldap: failed

I fetchmail on my CentOS-6.2 from 4 servers. One always gives the warning ----------------------------- [tim at grover cron.d]$ fetchmail -a go.tcd.ie fetchmail: Error exchanging credentials 6 messages for tmurphy at go.tcd.ie. reading message tmurphy at go.tcd.ie:1 of 6 (2978 header octets) (2639 body octets) flushed ... ----------------------------- The messages seem to come over OK, so it

I'm moving my home network server from a Dell server, which has been having some mysterious problems, to an HP MicroServer. Everything - MySQL, OpenVPN, email (dovecot), httpd, etc - except for openLDAP, which is taking more time than everything else put together. I haven't found any straightforward instructions on this anywhere. The official RedHat document