Dear Ricky,

We have RHEL 5 only. Even if it works with RHEL 5.1, will not affect us.

Is there any way that we can make some driver disk and use it with RHEL 5 ?


regards

We are facing a problem in installation of RHEL 5 in Lenovo Desktop Thinkcentre A60 (9631-A26).
During installation, the system gives message: No hard drives found on your system.

Thus installation gets aborted.

The motherboard in this machine is having G51G  Nvidia Chipset. Lenovo website does not give any drivers for linux. Also the same is not available from Nvidia site.
Can some one suggest solution for this problem ?



regards

Dear Experts,

Need your help in sorting out this issue:-

WE get lot of mails from different domains which are basically advertisements/promotions. The requirement is that these mails should get rejected at the server itself. We are using Postfix running on CentOS 4.6.
The configuration files are as follows:-

main.cf

queue_directory = /var/spool/postfix
command_directory = /usr/sbin
daemon_directory = /usr/libexec/postfix
mail_owner = postfix
default_privs = nobody
myhostname = xxxx.xxxxxx.net
mydomain = xxxxxx.net
myorigin = $mydomain
inet_interfaces = all
mydestination = $myhostname, localhost.$mydomain, $mydomain
smtpd_delay_reject = yes
smtpd_helo_required = yes
smtpd_recipient_restrictions =    check_client_access
            hash:/etc/postfix/access
            permit_mynetworks
            reject_unauth_destination
            reject_non_fqdn_sender
            reject_unknown_sender_domain
            reject_unknown_recipient_domain
            check_helo_access
            pcre:/etc/postfix/helo_checks
            reject_unauth_pipelining
            permit
smtpd_soft_error_limit = 3
smtpd_hard_errors_limit = 6
smtpd_helo_restrictions = permit_mynetworks,
   reject_rbl_client  =   sbl.spamhaus.org
   reject_rbl_client  =   proxies.relays.monkeys.com
   reject_rbl_client  =   opm.blitzed.org
   reject_rbl_client  =   dnsbl.njabl.org
   reject_rbl_client  =   blackholes.wirehub.net
   reject_rbl_client  =   list.dsbl.org
mynetworks = 192.168.0.0/24, 127.0.0.0/8
append_at_myorigin = yes
masquerade_classes = envelope_sender, header_sender, header_recipient
masquerade_domains = $mydomain
alias_maps = hash:/etc/postfix/aliases
alias_database = hash:/etc/postfix/aliases
always_bcc = backup@paceinfosys.net
mail_spool_directory = /var/spool/mail
mailbox_command = /usr/bin/procmail
header_checks = regexp:/etc/postfix/header_checks
body_checks = regexp:/etc/postfix/mbl-body-deny
mime_header_checks = pcre:/etc/postfix/mime_header_checks
debug_peer_level = 2
debugger_command =
    PATH=/bin:/usr/bin:/usr/local/bin:/usr/X11R6/bin
    xxgdb $daemon_directory/$process_name $process_id & sleep 5
sendmail_path = /usr/sbin/sendmail.postfix
newaliases_path = /usr/bin/newaliases.postfix
mailq_path = /usr/bin/mailq.postfix
setgid_group = postdrop
manpage_directory = /usr/share/man
sample_directory = /usr/share/doc/postfix-2.2.10/samples
readme_directory = /usr/share/doc/postfix-2.2.10/README_FILES
alias_database = hash:/etc/postfix/aliases
mailbox_size_limit = 1000000000
content_filter = smtp-amavis:[127.0.0.1]:10024
unknown_local_recipient_reject_code = 450
html_directory = no

master.cf

smtp      inet  n       -       n       -       -       smtpd
pickup    fifo  n       -       n       60      1       pickup
cleanup   unix  n       -       n       -       0       cleanup
qmgr     fifo  n       -       n       300     1        qmgr
rewrite   unix  -       -       n       -       -       trivial-rewrite
bounce    unix  -       -       n       -       0       bounce
defer     unix  -       -       n       -       0       bounce
flush     unix  n       -       n       1000?   0       flush
proxymap  unix  -       -       n       -       -       proxymap
smtp      unix  -       -       n       -       -       smtp
relay     unix  -       -       n       -       -       smtp
showq     unix  n       -       n       -       -       showq
error     unix  -       -       n       -       -       error
local     unix  -       n       n       -       -       local
virtual   unix  -       n       n       -       -       virtual
lmtp      unix  -       -       n       -       -       lmtp
maildrop  unix  -       n       n       -       -       pipe
  flags=DRhu user=vmail argv=/usr/local/bin/maildrop -d ${recipient}
old-cyrus unix  -       n       n       -       -       pipe
  flags=R user=cyrus argv=/cyrus/bin/deliver -e -m ${extension} ${user}
cyrus     unix  -       n       n       -       -       pipe
  user=cyrus argv=/cyrus/bin/deliver -e -r ${sender} -m ${extension} ${user}
uucp      unix  -       n       n       -       -       pipe
  flags=Fqhu user=uucp argv=uux -r -n -z -a$sender - $nexthop!rmail ($recipient)
ifmail    unix  -       n       n       -       -       pipe
  flags=F user=ftn argv=/usr/lib/ifmail/ifmail -r $nexthop ($recipient)
bsmtp     unix  -       n       n       -       -       pipe
  flags=Fq. user=foo argv=/usr/local/sbin/bsmtp -f $sender $nexthop $recipient
smtp-amavis   unix     -     -        y       -       2       smtp
   -o smtp_data_done_timeout=1200
   -o disable_dns_lookups=yes
127.0.0.1:10025 inet   n       -       n      -     -    smtpd
   -o content_filter=
   -o local_recipient_maps=
   -o smtpd_client_restrictions=
   -o smtpd_helo_restrictions=
   -o smtpd_sender_restrictions=
   -o smtpd_recipient_restrictions=permit_mynetworks,reject_unauth_destination
   -o mynetworks=127.0.0.0/8
   -o strict_rfc821_envelope=yes
   -o smtpd_error_sleep_time=0
   -o smtpd_soft_error_limit=1001
   -o smtpd_hard_error_limit=1000   
#   -o receive_override_options=no_header_body_checks
trace     unix   -   -   n   -   0   bounce
verify     unix   -   -   n   -   1   verify
anvil     unix   -   -   n   -   1   anvil
scache     unix   -   -   n   -   1   scache
discard     unix   -   -   n   -   -   discard
tlsmgr    unix  -       -       n       1000?   1       tlsmgr

Can we reject such mails coming from particular domains at the server itself so that these do not propagate into the network ?

rajesh.bahl

Our squid server seems to be working slow. We need to analyse the problem area.

1. We have verified the "input" bandwidth which is proper.
2. We need to check whether the client requests are getting catered from squid's cache or not ? For this we took observation from cache manager's "Cache Client List" which is reproduced below:-

Cache Clients:
Address: 192.168.0.3
Name: 192.168.0.3
Currently established connections: 0
    ICP Requests 0
    HTTP Requests 298
        TCP_HIT                   16   5%
        TCP_MISS                 202  68%
        TCP_REFRESH_HIT           13   4%
        TCP_IMS_HIT               59  20%
        TCP_NEGATIVE_HIT           8   3%

Address: 192.168.0.5
Name: 192.168.0.5
Currently established connections: 0
    ICP Requests 0
    HTTP Requests 156
        TCP_MISS                 129  83%
        TCP_REFRESH_HIT           10   6%
        TCP_REFRESH_MISS           6   4%
        TCP_CLIENT_REFRESH_M       2   1%
        TCP_IMS_HIT                9   6%

Address: 127.0.0.1
Name: 127.0.0.1
Currently established connections: 1
    ICP Requests 0
    HTTP Requests 11
        TCP_MISS                  11 100%

Address: 192.168.0.2
Name: 192.168.0.2
Currently established connections: 1
    ICP Requests 0
    HTTP Requests 349
        TCP_HIT                    6   2%
        TCP_MISS                 316  91%
        TCP_REFRESH_HIT           21   6%
        TCP_REFRESH_MISS           4   1%
        TCP_IMS_HIT                1   0%
        TCP_NEGATIVE_HIT           1   0%

Address: 192.168.0.9
Name: 192.168.0.9
Currently established connections: 0
    ICP Requests 0
    HTTP Requests 359
        TCP_MISS                 352  98%
        TCP_REFRESH_HIT            1   0%
        TCP_CLIENT_REFRESH_M       1   0%
        TCP_IMS_HIT                5   1%

Address: 192.168.0.8
Name: 192.168.0.8
Currently established connections: 0
    ICP Requests 0
    HTTP Requests 6
        TCP_MISS                   6 100%

TOTALS
ICP : 0 Queries, 0 Hits (  0%)
HTTP: 1179 Requests, 150 Hits ( 13%)

By seeing above, it seems that most of the requests are NOT getting catered from Cache ( TCP_Hits are very very low). How can we improve the scenario so that MAXIMUM number of client requests are served  through Cache only ?

Our Squid.conf file is as under:-

acl QUERY urlpath_regex cgi-bin \?
no_cache deny QUERY
cache_mem 8 MB
maximum_object_size 4096 KB
minimum_object_size 3 KB
store_avg_object_size 23 KB
cache_dir ufs /var/spool/squid 100 16 256
ftp_user squid@
redirect_program /usr/local/bin/squidGuard -c /usr/local/squidGuard/squidGuard.conf
redirect_children 8
auth_param basic children 5
auth_param basic realm Squid proxy-caching web server
auth_param basic credentialsttl 2 hours
acl all src 0.0.0.0/0.0.0.0
acl manager proto cache_object
acl localhost src 127.0.0.1/255.255.255.255
acl to_localhost dst 127.0.0.0/8
acl SSL_ports port 443 563
acl Safe_ports port 80      # http
acl Safe_ports port 21      # ftp
acl Safe_ports port 443 563   # https, snews
acl Safe_ports port 70      # gopher
acl Safe_ports port 210      # wais
acl Safe_ports port 1025-65535   # unregistered ports
acl Safe_ports port 280      # http-mgmt
acl Safe_ports port 488      # gss-http
acl Safe_ports port 591      # filemaker
acl Safe_ports port 777      # multiling http
acl CONNECT method CONNECT
acl lan src 192.168.0.0/24
acl otherguys dstdomain  .xxx.com
acl otherguys dstdomain  .playboy.com
acl otherguys dstdomain  .adultfriendfinder.com
acl otherguys dstdomain  .gmail.com
http_access allow manager localhost
http_access deny manager
# Deny requests to unknown ports
http_access deny !Safe_ports
# Deny CONNECT to other than SSL ports
http_access deny CONNECT !SSL_ports
#acl our_networks src 192.168.1.0/24 192.168.2.0/24
#http_access allow our_networks
# And finally deny all other access to this proxy
http_access deny otherguys
http_access allow lan
http_access allow localhost
http_access deny all
cache_effective_user squid
cache_effective_group squid

acl FTP proto FTP
always_direct allow FTP
coredump_dir /var/spool/squid

Can someone help ?



regards
rajesh.bahl
 

There are different clients. Some are for getting anti virus updates, some are for customised softwares.



regards
rajesh.bahl

I have been searching solution to this problem ( ftp access to clients in the presence of squid proxy) since quite some time.  The frox solution seems to work a bit. But again stuck because of this issue.

Any way if you have worked on this problem successfully, please give the details.



Regards
rajesh.bahl

Dear All,

Need your help in resolving the issue:-


WE are using squid as proxy server. Some of our clients need ftp access to ftp servers on the internet. I tried  a lot of "googling" and scratching head on the "available" solutions but nothing worked .

Ultimately I came across a software called FROX ftp proxy which is supposed to act as ftp proxy server.
I installed the same but it seems that there is some issue with this one also as:

1. I can ftp any ftp server on the internet from any client if and only if the same has been connected through ftp protocol  initially from the machine running FROX proxy.
2. If the same is not done , no client can connect the ftp servers.

My frox.conf is as under:-

Port 2121
BindToDevice eth1
ResolvLoadHack wontresolve.doesntexist.abc
User frox
Group frox
WorkingDir /var/lib/frox
DontChroot Yes
LogFile /var/log/frox/frox.log
XferLogging yes
PidFile /var/run/frox/frox.pid
APConv yes
BounceDefend yes
ControlPorts 40000-40999
PassivePorts 41000-41999
MaxForks 10
MaxForksPerHost 4
ACL Allow 192.168.0.0/255.255.255.0 - * 21



Can some one help in resolving the issue ?

regards
rajesh.bahl

Dear All,

Please help !!
I am literally tired of spam and want to get rid of the same.


rajesh.bahl
 

I have observed the same thing while putting some restrictions using smtpd_recipient_restrictions parameter in main.cf as under:

smtpd_recipient_restrrictions =
          permit_mynetworks
          reject_unauth_destination
          reject_non_fqdn_sender
         

If I use these settings in main.cf, restart postfix service and try to test these restrictions by using :
telnet  localhost  25
HELO  .
MAIL FROM: xxx@yyy.com
RCPT TO: uuu@vvv.com


The process does not give any error but proceeds further for keying in "DATA".

It seems that the restrictions are NOT getting effected.

Is it a problem in my writing/configuration error  ?


Can anyone help ?



rajesh.bahl

Hi !

I am trying to configure postfix 2.3.3-2 shipped with CentOS 5.

In the original main.cf , the mydestination parameter is commented and if AI issue the command:

postconf mydestination , the result is: $myhostname, localhost.$mydomain, $mydomain

If I edit this parameter to the form:

mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain,
< white space > mail.$mydomain, www.$mydomain, ftp.$mydomain


and run the command: postconf mydestination

I get the same output as in the commented state of mydestination parameter.


I have not been able to understand why anything provided as "value" to this parameter in main.cf is not getting effected ?

Pls. help !



regards
rajesh.bahl

 Both these things are implemented but still nothing is happening.

How can we check whether  postfix  is checking incoming mail for the domains defined in "header_checks" file ?

Do I need to install any additional packages ?



Regards
rajesh.bahl

We are using Postfix as mail server. Because of heavy spam coming in we wanted to ban mails from certain domains. We put these in the "header_checks" file ( the file in use is shown below ) . Surprisingly the mails from domains entered in the file are still getting in. Even the /var/log/maillog file does not show any entry for "DISCARDED" mail.

Can someone suggest what is wrong with this file or modifications (if any) required to make it more useful ?
The header_checks file is as under:-

/^Subject:.*Make Money Fast !!!/    DISCARD
/^Subject:.*Join Your Friends at Christian Mingle/    DISCARD
/^Subject:.*Pharma* /    DISCARD
/^Subject:.*Your New ICQ Password/    DISCARD
/^From:.*Doctor /     DISCARD
/^Subject:.*The Ultimate Online Pharmaceutical/      DISCARD
/^Subject:.*Buy OEM Software/      DISCARD
/^To:.*Undisclosed Recipients:;/   DISCARD
/^Subject:.*Large Gains Expected/  DISCARD
/^From:.*@blue-ondulation.com /    DISCARD
/^From:.*@altransnak.com  /        DISCARD
/^From:.*@jumpanda.com /           DISCARD
/^Subject:.*Your 10-day sample pack is ready/    DISCARD
/^Subject:.*Software* /             DISCARD
/^Subject:.*Online Pharmacy* /       DISCARD
/^Subject:.*Mortg* /             DISCARD 
/^Subject:.*wife* /                DISCARD
/^Subject:.*pleasure* /            DISCARD
/^Subject:.*her*  /         DISCARD
/^Subject:.*EM Software* /         DISCARD
/^Subject:.*singles* /             DISCARD
/^Subject:.*Re

• *  /              DISCARD

/^Subject:.*Need Cash*  /          DISCARD
/^Subject:.*Lo*se weight*  /       DISCARD
/^Subject:.*@indbs.com /           DISCARD
/^From:.*@email.de /                 DISCARD
/^From:.*@optician.com /           DISCARD
/^From:.*@ancestry.com /           DISCARD
/^From:.*@humour.com /             DISCARD
/^From:.*@email.cz /               DISCARD
/^From:.*@torchmail.com /          DISCARD
/^From:.*@plaza-cco.com.br /       DISCARD
/^From:.*@about.com /              DISCARD
/^From:.*@startribune.com /        DISCARD
/^From:.*@acmecity.com /           DISCARD
/^From:.*@cyberinbox.com /         DISCARD
/^From:.*@uymail.com /             DISCARD
/^From:.*@terra.cl /               DISCARD
/^From:.*@mailops.com /            DISCARD
/^From:.*@asianavenue.com /        DISCARD
/^From:.*@.online.no /             DISCARD
/^From:.*@liquidinformation.net /  DISCARD
/^From:.*@nmonline.com.cn /        DISCARD
/^From:.*@dreamer.com /            DISCARD
/^From:.*@la.com /                 DISCARD
/^From:.*@myself.com /             DISCARD
/^From:.*@sonicnet.com /           DISCARD
/^From:.*@mypcera.com /            DISCARD
/^From:.*@ukr.net /                DISCARD
/^From:.*@apexmail.com /           DISCARD
/^From:.*@kasparovch.com /         DISCARD
/^From:.*@mediomail.com /          DISCARD
/^From:.*@maktoob.com /            DISCARD
/^From:.*@compuserve.com /         DISCARD
/^From:.*@uolcat.com /             DISCARD
/^From:.*@overcmail.de /           DISCARD
/^From:.*@ningbo.net /             DISCARD
/^From:.*@tls-spedition.de /      DISCARD
/^From:.*@berkeleyheightspolice.com /   DISCARD
/^From:.*@roadtripfever.com /      DISCARD
/^From:.*@RX3Best.org /         DISCARD
/^From:.*@dieter-roehm.de /      DISCARD
/^From:.*@aymeric-ruiz.com /      DISCARD
/^From:.*@lamarette.com /      DISCARD
/^From:.*@eckman-danovitz.com /      DISCARD
/^From:.*@ivers.com /         DISCARD
/^From:.*@chello.fr /         DISCARD
/^From:.*@stanleyjordan.com /      DISCARD
/^From:.*@conspiracyboards.com /   DISCARD
/^From:.*@hmjagtiani.com /      DISCARD
/^From:.*@europills.com /      DISCARD
/^From:.*@documentarychannel.com /   DISCARD
/^From:.*@ubmindia.com /      DISCARD
/^From:.*@artel.com /         DISCARD
/^From:.*@webforall.dk /      DISCARD
/^From:.*@consumerinfoline.com /   DISCARD
/^From:.*@ponchatoulachamber.com /   DISCARD
/^From:.*@skicanadamag.com  /      DISCARD
/^From:.*@downsizeme.tv /      DISCARD
/^From:.*@consumerinfoline.com  /   DISCARD
/^From:.*@varitjournal.com  /      DISCARD
/^From:.*@ubmindia.com  /      DISCARD
/^From:.*@enterpriser.in  /      DISCARD
/^From:.*@channeltimes.com  /      DISCARD
/^From:.*@mixmail.com  /      DISCARD
/^From:.*@dojotoolkit.org  /      DISCARD
/^From:.*@time-blog.com  /      DISCARD
/^From:.*@switchzoo.com  /      DISCARD
/^From:.*@specialevents.com  /      DISCARD
/^From:.*@choosereport.org  /      DISCARD
/^From:.*@techtree.com  /      DISCARD
/^From:.*@wrigley.com   /      DISCARD
/^From:.*@channelworld.in  /      DISCARD
/^From:.*@zapakannounce.com  /      DISCARD
/^From:.*@foxnews.com  /      DISCARD
/^From:.*@newsday.com  /      DISCARD
/^From:.*@marinecorpstimes.com  /   DISCARD
/^From:.*@team2000.us  /      DISCARD
/^From:.*@lists.cybermedia.in  /   DISCARD
/^From:.*@asturianus.com  /      DISCARD
/^From:.*@flickr.com  /         DISCARD
/^From:.*@psychcentral.com  /      DISCARD
/^From:.*@mediamatters.org  /      DISCARD
/^From:.*@industrialheating.com  /   DISCARD
/^From:.*@heatreward.com  /      DISCARD
/^From:.*@icann.org  /         DISCARD
/^From:.*@myprofilepimp.com  /      DISCARD
/^From:.*@yahoo.fr  /         DISCARD
/^From:.*@selvesandothers.org  /   DISCARD
/^From:.*@serjicalstrike.com  /      DISCARD
/^From:.*@houses.com  /         DISCARD
/^From:.*@cp.com  /         DISCARD
/^From:.*@qx.com  /         DISCARD
/^From:.*@cifns.org  /         DISCARD
/^From:.*@123greetings.biz  /      DISCARD
/^From:.*@convergingworld.com  /   DISCARD
/^From:.*@pantaiwan.com.tw  /      DISCARD
/^From:.*@oembrowser.com  /      DISCARD
/^From:.*@cyberia.net.lb  /      DISCARD
/^From:.*@barbf.com  /         DISCARD
/^From:.*@boston.com  /         DISCARD
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Dear All,

Need help in resolving this issue:-

Earlier it was told that UNIX does not use BIOS services.
Does linux acts the same way ?

I am having a Lenovo make PC having Intel 945 chipset  with 4 GB memory installed. Hardware setup shows 4 GB memory installed.
I installed Centos 4.4 which got  installed without problem. The issue is that the system after installation shows nearly 3 GB of memory. I later installed hugemem kernel also with the hope that balance memory can be recognised but it did not happen.Again the memory was shown as same (nearly 3 GB) despite booting with hugemem kernel.

Later I found that there are two parameters in BIOS Setup of the machine:

Memory used by OS : 3035 MB
Memory used by devices: 1061MB

Is it because of these parameters that the OS can not use memory beyond 3 GB? Is there any way to overcome this limit and use full 4 GB of memory ?


rajesh.bahl

That is very clear from the error itself.

What I have asked for is a solution tom decompress it. The original file has been lost as the disk of the server having this file has crashed.

Also I have been told that this file was transferred from the server to a windows machine via ftp in ascii mode. I fully agree that this is a badly corrupted file but some how we have to decompress and get data out of it.


Can some one help ?




rajesh.bahl

Dear All,


I received one compressed file for analysis . The filename is fade.dbf.Z.

While uncompressing it on my CentOS 5 system, I receive the error:
gunzip: fade.dbf.Z: Bad table (case b)

Is there any way we can decompress this file ?


rajesh.bahl

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