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RE: [CentOS] Mailers and records MX
by israel.garcia＠cimex.com.cu 20 Jun '06

20 Jun '06

More details: 1. The 3 servers are in diferents networks... 2. My higher's mx servers (mx 15 and mx 20) receive a lot of legitimate mail.. It also received a lot of spam too.... :-( 3. MX1 server is in the main network (backbone).. It's the most accesible network of the others Mx's 4. Mx 2 and Mx 3 are constantly receiving messages... Like if the dns were the same MX record for the three servers.. Regards Israel -----Mensaje original----- De: replies-lists-centos(a)listmail.innovate.net [mailto:replies-lists-centos@listmail.innovate.net] Enviado el: Tuesday, June 20, 2006 1:04 PM Para: SV-Israel Garcia Asunto: Re: [CentOS] Mailers and records MX are you seeing spam or "real" mail through the higher ordinal MX hosts? spammers often target higher ordinal MX hosts because they assume that there are fewer blocks there (e.g., the user base isn't checked). if it's "real" mail, it can simply be that the lower ordinal MX hosts are seen as slow by some sender's mail hosts. - Rick ------------ Original Message ------------ > Date: Tuesday, June 20, 2006 02:01:06 PM -0500 > From: israel.garcia(a)cimex.com.cu > To: centos(a)centos.org > Subject: [CentOS] Mailers and records MX > > I've installed bind on centos 4.3.. This is a part of my config file: > > example.com. IN MX 10 mail.example.com. > example.com. IN MX 15 mail1.example.com. > example.com. IN MX 20 mail2.example.com. > > mail.example.com. IN A x.x.x.x > mail1.example.com. IN A x.x.x.x > mail2.example.com. IN A x.x.x.x > > > Every seems to be fine, but I'm constantly receiving messages in my 3 > MX servers, even if mail.example.com (the less MX record) is available > waiting for connections from outside... Why if my less mx record > server is available the others servers are constantly receiving > messages for my domain? > > Thanks for your time > Israel > ---------- End Original Message ----------

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Mailers and records MX
by israel.garcia＠cimex.com.cu 20 Jun '06

20 Jun '06

I've installed bind on centos 4.3.. This is a part of my config file: example.com. IN MX 10 mail.example.com. example.com. IN MX 15 mail1.example.com. example.com. IN MX 20 mail2.example.com. mail.example.com. IN A IP mail.example.com. IN A IP

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32->64 bit
by Mark Belanger 20 Jun '06

20 Jun '06

Is it possible to take a Centos 3.7 machine - that was installed with the 32 bit version of CentOS, and update it to a 64 bit kernel? In other words - convert an i386 to ia64. I don't care about the applications, just the kernel. -Mark

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Routing w/ Two Interfaces
by Michael B Allen 20 Jun '06

20 Jun '06

I have two interfaces on a centos machine with IPs 192.168.2.15 and 192.168.3.15. The routing table is: # route Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 192.168.3.0 * 255.255.255.0 U 0 0 0 eth1 192.168.2.0 * 255.255.255.0 U 0 0 0 eth0 169.254.0.0 * 255.255.0.0 U 0 0 0 eth1 default 192.168.2.1 0.0.0.0 UG 0 0 0 eth0 The gateway 192.168.2.1 is a wireless router on which I have a static route for 192.168.3.0/24 to 192.168.2.15. The problem is I cannot communicate between these networks. If I ping from a machine on 192.168.2.0 to a machine on 192.168.3.0 it never makes it. If I run tcpdump -i eth0 on the machine with two nics, I can see the ICMP packets coming in so I know the static route on the wireless router is working. If I run tcpdump -i eth1 I cannot see the ICMP packets. So the routing is wrong. I can successfully ping the machine on the 192.168.3.0 network from the machine with two interfaces. I would think that a packet sent from 192.168.2.100 for 192.168.3.128 would go to the gateway, get sent to 192.168.2.15 which it would go though the above listed routing table, match 192.168.3.0 and get sent to eth1. What am I doing wrong? Mike -- Michael B Allen PHP Extension for SSO w/ Windows Group Authorization http://www.ioplex.com/

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64-bit ISO Burning Failures
by karl＠klxsystems.net 19 Jun '06

19 Jun '06

Hi, I have downloaded several different sets of the 64-bit ISOs, and have burned them to CD using various of my known-good ISO burning softwares, including Nero and DeepBurn on Windows, as well as the native CD burning KDE linux tool on Xandros Linux. I am using mirrors from the site, like kernel.org. I have chosen low burning speeds also, but when I insert the ISO CD into a server and boot it up, the ISO doesn't work. I have all of the BIOs/boot settings perfect, the machine is definitely 64-bit, and even when I insert another OS, like Fedora, or Whitebox, it works fine. Is there something i'm not doing, or doing wrong when burning these 64 bit CD's? I'm in a colo facility and would really like to leave here having converted a bunch of my WBEL and FC boxes to 64-bit Centos. Any help would be much appreciated. -karlski

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Raid Cards
by Tony Wicks 19 Jun '06

19 Jun '06

http://www.highpoint-tech.com/datasheets/RR2220%20datasheet_050430.pdf Anyone know if this is any good under Centos 4.3 ? I see there is a current RHEL 3 and 4 driver. Would that driver survive kernel upgrades, I'm guessing it would being modular ? (please don't tell me that 3ware is the only make to use, tw_cli is not exactly user friendly). Anyone using this - http://www.promise.com/product/product_detail_eng.asp?segment=RAID%20HBAs&p… Promise has never given me any joy under Linux. cheers

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CentOS-announce Digest, Vol 16, Issue 8
by centos-announce-request＠centos.org 19 Jun '06

19 Jun '06

Send CentOS-announce mailing list submissions to centos-announce(a)centos.org To subscribe or unsubscribe via the World Wide Web, visit http://lists.centos.org/mailman/listinfo/centos-announce or, via email, send a message with subject or body 'help' to centos-announce-request(a)centos.org You can reach the person managing the list at centos-announce-owner(a)centos.org When replying, please edit your Subject line so it is more specific than "Re: Contents of CentOS-announce digest..." Today's Topics: 1. CESA-2006:0515-01: Important CentOS 2 i386 sendmail security update (John Newbigin) ---------------------------------------------------------------------- Message: 1 Date: Mon, 19 Jun 2006 09:46:01 +1000 From: John Newbigin <jnewbigin(a)ict.swin.edu.au> Subject: [CentOS-announce] CESA-2006:0515-01: Important CentOS 2 i386 sendmail security update To: centos-announce(a)centos.org Message-ID: <4495E5B9.9090200(a)ict.swin.edu.au> Content-Type: text/plain; charset=us-ascii; format=flowed The following errata for CentOS-2 have been built and uploaded to the centos mirror: RHSA-2006:0515-01 Important: sendmail security update Files available: sendmail-8.12.11-4.21AS.10.i386.rpm sendmail-cf-8.12.11-4.21AS.10.i386.rpm sendmail-devel-8.12.11-4.21AS.10.i386.rpm sendmail-doc-8.12.11-4.21AS.10.i386.rpm More details are available from the RedHat web site at https://rhn.redhat.com/errata/rh21as-errata.html The easy way to make sure you are up to date with all the latest patches is to run: # yum update -- John Newbigin Computer Systems Officer Faculty of Information and Communication Technologies Swinburne University of Technology Melbourne, Australia http://www.ict.swin.edu.au/staff/jnewbigin ------------------------------ _______________________________________________ CentOS-announce mailing list CentOS-announce(a)centos.org http://lists.centos.org/mailman/listinfo/centos-announce End of CentOS-announce Digest, Vol 16, Issue 8 **********************************************

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Re: [CentOS] Xen with Centos 4.3 - pointers?
by laytonjb＠charter.net 19 Jun '06

19 Jun '06

---- "William L. Maltby" <BillsCentOS(a)triad.rr.com> wrote: > On Sun, 2006-06-18 at 16:11 -0700, laytonjb(a)charter.net wrote: > > Howdy, > > > > I'd like to play with Xen on top of a Centos 4.3 installation. I've been > > googling, but haven't found a nice comprehensive set of notes to get me > > started. I've looked at the XenSource site, a wiki site that tells you > > how to get CentOS working in a Xen shell (or whatever it's called). > > So, for a Xen newbie, does anyone have have any pointeds to notes, > > documentation, etc? > > No animosity intended, but I hope you credit the folks properly when > your article is published. Most definitely! However I don't plan to write anything about it just now. I want to experiment with it. myslef a few people have been thinking about it for use on cluster head nodes. It may allow us to try various OS's without having to install a new distro. Plus we can do some things with running a stable base OS and then use Xen to run some experimental stuff. Jeff

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Xen with Centos 4.3 - pointers?
by laytonjb＠charter.net 19 Jun '06

19 Jun '06

Howdy, I'd like to play with Xen on top of a Centos 4.3 installation. I've been googling, but haven't found a nice comprehensive set of notes to get me started. I've looked at the XenSource site, a wiki site that tells you how to get CentOS working in a Xen shell (or whatever it's called). So, for a Xen newbie, does anyone have have any pointeds to notes, documentation, etc? TIA! Jeff

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timezone correction stuff
by Robert Hanson 18 Jun '06

18 Jun '06

Apologies for being late to the party with this... I finally found my old notes on this re: helping out a blind friend fix his centos box... log in as root cd /usr/share/timezone cd /usr/share/zoneinfo/America/ cp Los_Angeles /etc/localtime /usr/bin/rdate -s time.nist.gov /sbin/hwclock --systohc For more details, go to http://wiki.ehow.com/Change-the-Timezone-in-Linux - rh -- Robert Hanson - Abba Communications Computer & Internet Services (509) 624-7159 - www.abbacomm.net

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