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Mail Send and Receive Problem
by jiten jha 05 Sep '12

05 Sep '12

Dear Friends , I have postfix mail server it is in running condition. But suddenly it is giving me error *Unknown user or password incorrect. * when I check log it is showing me *"Sep 5 10:26:51 student dovecot: imap-login: Aborted login (auth failed, 1 attempts): user=<jiten(a)student.ac.in>, method=PLAIN, rip=192.168.1.2, lip=192.168.1.2, secured"* After wait for few second it is giving me another log . Sep 5 10:08:45 student postfix/anvil[9307]: statistics: max connection rate 1/60s for (smtp:10.200.12.1) at Sep 5 10:05:25 Sep 5 10:08:45 student postfix/anvil[9307]: statistics: max connection count 1 for (smtp:10.200.12.1) at Sep 5 10:05:25 Sep 5 10:08:45 student postfix/anvil[9307]: statistics: max cache size 1 at Sep 5 10:05:25 Sep 5 10:13:56 student postfix/smtpd[9447]: connect from mailrly1.student.ac.in[192.168.1.2] Sep 5 10:13:56 student postfix/smtpd[9447]: warning: restriction check_sender_mx_access: bad argument "/etc/postfix/maps/verisign_mx_access": need maptype:mapname Sep 5 10:13:56 student postfix/smtpd[9447]: NOQUEUE: reject: RCPT from mailrly1.student.ac.in[192.168.1.2]: 451 4.3.5 Server configuration error; from=<webmaster(a)strandbookstall.com> to=<divya(a)student.ac.in> proto=SMTP helo=<mailrly1.student.ac.in> Sep 5 10:13:56 student postfix/cleanup[9451]: 20E2BFA0F54: message-id=< 20120905044356.20E2BFA0F54(a)student.student.ac.in> Sep 5 10:13:56 student postfix/smtpd[9447]: disconnect from mailrly1.student.ac.in[192.168.1.2] Sep 5 10:13:56 student postfix/qmgr[9236]: 20E2BFA0F54: from=< double-bounce(a)student.student.ac.in>, size=791, nrcpt=1 (queue active) Sep 5 10:13:56 student postfix/virtual[9452]: 20E2BFA0F54: to=< postmaster(a)student.ac.in>, orig_to=<postmaster>, relay=virtual, delay=0.12, delays=0.06/0/0/0.05, dsn=5.1.1, status=bounced (unknown user: " postmaster(a)student.ac.in") Sep 5 10:13:56 student postfix/bounce[9453]: warning: 20E2BFA0F54: undeliverable postmaster notification discarded Sep 5 10:13:56 student postfix/qmgr[9236]: 20E2BFA0F54: removed Sep 5 10:17:16 student postfix/anvil[9449]: statistics: max connection rate 1/60s for (smtp:192.168.1.2) at Sep 5 10:13:56 Sep 5 10:17:16 student postfix/anvil[9449]: statistics: max connection count 1 for (smtp:192.168.1.2) at Sep 5 10:13:56 Sep 5 10:17:16 student postfix/anvil[9449]: statistics: max cache size 1 at Sep 5 10:13:56 I am not understand why It is giving me error and how to solve it. Even I search on google also but not find any answer there. So Please help me to solve the problem. ASAP -- Thanks & Regards Jitendra Jha +91-7498370550

2 1

CentOs6- Use nscd for offline LDAP
by Johan Vermeulen 05 Sep '12

05 Sep '12

Dear All, I'm thinking about connecting the 15 or so laptops in our organisation to LDAP. Now I'm trying to use nscd in order to enable the users to work when being offline. The test laptop is installed for this occasion, updated CentOs6.3. Following the advise I found on a few posts I modified */etc/nscd.conf : * server-user nscd logfile /var/log/nscd.log debug-level 3 reload-count unlimited paranoia no enable-cache passwd yes positive-time-to-live passwd 3600 negative-time-to-live passwd 20 suggested-size passwd 211 check-files passwd yes persistent passwd yes shared passwd yes enable-cache group yes positive-time-to-live group 3600 negative-time-to-live group 60 suggested-size group 211 check-files group yes persistent group yes shared group yes enable-cache hosts yes I also Modified*/etc/nsswitch.conf*and changed the order after passwd - shadow - group : passwd: ldap files shadow: file ldap group: ldap files *This seems to work.* * When stopping nscd, LibreOffice gives the EM: /The application cannot be started. A general error occurred while accessing your central configuration. /*When starting nscd LibreOffice just works. *When enabling nscd a can su to an LDAP user from root, without nscd the user does not exist. *But the problem I'm having* is I was kinda hoping to log back in from a locked screen or from hibernation, in other words continue a running session. Or who knows, even start a new session. Can anyone help me make this work? Thanks for any advise Greetings, James -- IT-medewerker Caw De Kempen Opensource Software is the future.

2 3

Postfix login Name Error
by jiten jha 05 Sep '12

05 Sep '12

Dear Friends, I have done basic postfix mail server configuration but problem is when I try to login then it is not taking my name . it is taking full name with domain name. My domain name is *"studen.ac.in"* My user name is jiten when I try to login with my name in a log it is showing *" Sep 5 10:06:56 neu dovecot: imap-login: Aborted login (auth failed, 1 attempts): user=<jiten(a)ac.in>, method=PLAIN, rip=192.168.1.2, lip=10.112.1.2, secured "* But when I try to login with* jiten(a)student.ac.in *it is working fine . So please help me how can I remove or hide my domain name when I and other user want to access my mail server . -- Thanks & Regards Jitendra Jha +91-7498370550

1 0

Recover software raid 10 on CentOS 6.3
by Jacob Hydeman 04 Sep '12

04 Sep '12

The setup is 4 1TB drives running RAID10. I was using the Gnome Disk Utility to verify the integrity of the array (which is a 500MB mirrored md0 and the rest a R10 md1). I believe one of the drives is bad but prior to the system going offline it showed that 2 drives were detached from the array but healthy. A reboot results in a panic complaining that not enough mirrors are available. Is there a method to mount this array from a live CD so I can export the VM images. I have backups of the important ones but I'd lose 18 hours of data and a new PBX VM that was just finished but not backed up yet. I've been reading and testing various suggestions from the web but until I get this unit back up all phones and E-Mail are down, which leads to a slight panic, which makes it difficult to read and understand :) The backup server is at another location so I'm trying to recover first. Any direction would be appreciated. Thanks, Jacob

1 1

Gradually adjust NTP sync over time?
by Sean Carolan 04 Sep '12

04 Sep '12

Suppose you have server A and server B. Server B is running 60 seconds too fast, while server A is accurate. Is there a way to gradually move server B's time back into sync with server A, without making a drastic, immediate change to the clock? In other words, we would like to 'smear' the difference across several hours or days to ensure there are no drastic changes in timestamps, etc.

2 3

lscfg and vpdupdate om CentOS-6
by James B. Byrne 04 Sep '12

04 Sep '12

Are these packages still available for RHEL6/CentOS6? If so then where does one get them? If not then have they been replaced with something else? There does not seem to be a listing for them at epel. -- *** E-Mail is NOT a SECURE channel *** James B. Byrne mailto:ByrneJB@Harte-Lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3

2 1

svn: Authorization failed
by Michael Hennebry 04 Sep '12

04 Sep '12

How do I set up a subversion repository so that svn can use an svnserve running locally? I own the repository. svnserve -d -r ... runs as me. svn mkdir -m 'make trunk' svn://localhost/redeye/trunk fails with svn: Authorization failed There is no request for credentials. Is anyone that can willing to share an example that works? I'm running CentOP 6.2 [hennebry@67-61-185-5 reps]$ svn --version svn, version 1.6.11 (r934486) compiled Jun 23 2012, 00:28:25 Copyright (C) 2000-2009 CollabNet. Subversion is open source software, see http://subversion.tigris.org/ This product includes software developed by CollabNet (http://www.Collab.Net/) The following repository access (RA) modules are available: * ra_neon : Module for accessing a repository via WebDAV protocol using Neon. - handles 'http' scheme - handles 'https' scheme * ra_svn : Module for accessing a repository using the svn network protocol. - with Cyrus SASL authentication - handles 'svn' scheme * ra_local : Module for accessing a repository on local disk. - handles 'file' scheme [hennebry@67-61-185-5 reps]$ svnserve --version svnserve, version 1.6.11 (r934486) compiled Jun 23 2012, 00:28:25 Copyright (C) 2000-2009 CollabNet. Subversion is open source software, see http://subversion.tigris.org/ This product includes software developed by CollabNet (http://www.Collab.Net/) The following repository back-end (FS) modules are available: * fs_base : Module for working with a Berkeley DB repository. * fs_fs : Module for working with a plain file (FSFS) repository. Cyrus SASL authentication is available. -- Michael hennebry(a)web.cs.ndsu.NoDak.edu "On Monday, I'm gonna have to tell my kindergarten class, whom I teach not to run with scissors, that my fiance ran me through with a broadsword." -- Lily

2 2

suggestion for filesystem or general performance optimization
by Götz Reinicke 04 Sep '12

04 Sep '12

Hi, recently I noticed, that we have some performance issues regarding our central samba fileserver. Red Hat EL 5.8, samba3x-3.5.10-0.109. Doing a rsync, scp or accessing a share from a client and copy large files (e.g. 3 GB ISO), I do get a read / write average about 60 to 90 MB/sec. So LAN and general hardware can work at max. lan speed. But copying or syncing small files, e.g. user profiles etc. or doing a backup of the smaller files lets drop the average performance to 10 MB/Sec or less :( We use ext3 (noatime), the storage is connected by iscsi, it is a sun storage with sas harddisk. All suggestions so far: migrate to ext4 and good luck :) I read a couple of filesystem comparisons and ext4 looks like the best option, but what else could I do or expect? Locking? Limits ... blocksizes, more RAM (4GB installed), we have about 600GB of user data. so not really much... Thanks for any suggestion or hint . Regards . Götz -- Götz Reinicke IT-Koordinator Filmakademie Baden-Württemberg GmbH

2 1

NTP server problem behind firewall
by Artifex Maximus 04 Sep '12

04 Sep '12

Hello! I would like to setup an NTP server for my Windows network using CentOS 6.3 with firewall turned on. As I learned the NTP protocol uses port 123 UDP. I have two NIC cards. One for internal network and one for access internet. Both cards in private address range. The problem is when I am using firewall described below the client cannot access the server. No idea why. Without firewall everything works flawless. So the problem is not in the NTP configuration. No idea why but with disabled firewall the first query gives error but all other query is work. I am using arpwatch to see what is happen on network (new machines and so). Not know is that related to the problem or not. First I had used the system-config-firewall generated firewall (standard firewall with port 123:udp added). No success, client cannot connect. Next I made a script for myself and saved with 'service iptables save' command. The configuration is: eth0 10.0.0.99/24 eth1 10.0.1.10/24 The script for making firewall rules: iptables -P INPUT ACCEPT iptables -F iptables -A INPUT -i lo -j ACCEPT iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT iptables -A INPUT -p tcp --dport 22 -j ACCEPT iptables -A INPUT -i eth0 -s 10.0.0.0/24 -p udp --dport 123 -j ACCEPT iptables -A INPUT -i eth0 -s 10.0.0.0/24 -p tcp --dport 123 -j ACCEPT iptables -A INPUT -m limit --limit 5/min -j LOG --log-prefix "iptables denied: " --log-level 7 iptables -A INPUT -j DROP iptables -P FORWARD DROP iptables -P OUTPUT ACCEPT Windows client time server is set to 10.0.0.99. Just for sure I enabled 123 TCP as well even I think that was unnecessary. The rule which related to NTP (123 UDP) increments its packet and byte count with 'iptables -L -n -v' so some connection was made. But no success on sync. Any idea what is wrong? Bye, a

6 14

yum repository for development series explicitly
by jiten jha 04 Sep '12

04 Sep '12

Dear Friends, When I am running this command yum install --enablerepo=milter-manager-development -y milter-manager * So I am getting this error Message . * milter-manager/primary | 7.0 kB 00:01 milter-manager 40/40 http://downloads.sourceforge.net/project/milter-manager/centos/6/developmen…: [Errno 14] PYCURL ERROR 22 - "The requested URL returned error: 404" Trying other mirror. Error: Cannot retrieve repository metadata (repomd.xml) for repository: milter-manager-development. Please verify its path and try again I have done. yum clean all and yum update also. I search on google but not getting any answer. Please help me to solve this problem. -- Thanks & Regards Jitendra Jha +91-7498370550

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