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• Unable to call through asterisk

  - by sk

  I want to create a voip service. I have installed asterisk-1.4 on a dedicated remotely hosted debian lenny distro. I made a sip.conf and extensions.conf so as to place a call between two sip phones(i am using xlite 3.0) installed in some other Windows PC. Whenever i switch this phones the asterisk console shows that Registration from '"1000"<sip:[email protected]>' failed for '122.168.10.254' - Peer is not supposed to register Where xx.xx.xx.xx is the server's IP. i.e my sip phones are unable to register with the asterisk server. Please help me to place call between two sip phones #sip show peers Name/username Host Dyn Nat ACL Port Status 2000 (Unspecified) D 0 Unmonitored 1000 (Unspecified) D 0 Unmonitored 2 sip peers [Monitored: 0 online, 0 offline Unmonitored: 0 online, 2 offline] # sip show registry Host Username Refresh State Reg.Time # sip show channels Peer User/ANR Call ID Seq (Tx/Rx) Format Hold Last Message 0 active SIP channels

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• How can I free up disk space in my Ubuntu Hardy Heron install?

  - by rvs

  I'd like to make some room on /dev/sda1 without necessarily having to remove a whole bunch of applications (I've already gone through and deleted all frivolous apps). This is the state of /dev/sda1 currently: Dir: / Type: ext3 Total: 9.4GiB Free: 488.6MiB Available: 0bytes Used: 8.9GiB EDIT added du output from comments below: 769068 /var/lib/mysql 351208 /usr/lib 297060 /usr/local/bin/eclipse/plugins 184124 /usr/bin 175924 /usr/lib/openoffice/program 143940 /usr/local/bin/eclipsePHP/plugins 92520 /boot 81200 /opt/android-sdk-linux/add-ons/google_apis-6_r01/images 79964 /opt That's funny, because the tables in /var/lib/mysql are the reason that I ran out in the first place. But I need them, and room for many more possibly large db's.

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• Good Free Backup Tool - with provisos

  - by vaccano

  I have seen some Backup Questions around. But they are not quite what I am looking for. I would like to have a back up of my entire hard drive (to an external drive). I would like it to be the kind that has a base backup then just backs up the changes since the last backup. I would like it to be able to have a fully restorable image of my hard drive (not just key files). Lastly I would like it to be free (or super cheap). (The above requirements are important, but I will have to drop them if they up the price as my boss will not pay for them.) I have a Solid State Hard Drive 250 GB backing up to a 1TB external hard drive using Windows XP.

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• How to restore jump list for Windows Explorer pinned taskbar icon?

  - by Dario Solera

  I pinned Windows Explorer's icon to my taskbar months ago, and all worked fine, including jump lists. Note: I changed the default Explorer's folder using the usual trick of changing the GUID in the shortcut. Now, all of a sudden, the jump list is empty, and dropping folders on the pinned icon does not produce any effect, nor recently-opened folders show up in the list (although in the taskbar options I made sure to have it remember recently open items). How can I restore the original functionality, given that all other pinned applications jump lists work correctly? I'm running Windows 7 Ultimate x64, updated with the latest patches. The OS is in US English and my locale is Italian-Italy.

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• Server 2008 Web Edition IIS6 SMTP conflict

  - by user219313

  I'm using IIS6 Manager to setup the SMTP service on Windows Server 2008 Web Edition. There seems to be a conflict (port 25?) which means that I cannot start and stop the Default SMTP server within IIS6. I can start and stop it with the services.msc snap in and this is reflected in state of the SMTP server in IIS6 manager. I'm worried that none of the settings I want to get at within IIS6 (logging, authentication etc..) are having any effect. None of these settings are available within IIS7 in Web Edition.

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• Node.js server crashes , Database operations halfway?

  - by Ranadeep

  I have a node.js app with mongodb backend going to production in a week and i have few doubts on how to handle app crashes and restart . Say i have a simple route /followUser in which i have 2 database operations /followUser ----->Update User1 Document.followers = User2 ----->Update User2 Document.followers = User1 ----->Some other mongodb(via mongoose)operation What happens if there is a server crash(due to power failure or maybe the remote mongodb server is down ) like this scenario : ----->Update User1 Document.followers = User2 SERVER CRASHED , FOREVER RESTARTS NODE What happens to these operations below ? The system is now in inconsistent state and i may have error everytime i ask for User2 followers ----->Update User2 Document.followers = User1 ----->Some other mongodb(via mongoose)operation Also please recommend good logging and restart/monitor modules for apps running in linux

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• Sql Server database logs "missing"

  - by linkerro

  Here's the problem we're having: In the applications that are using the databases we get errors like: The log for database 'redactedDatabaseName' is not available. Check the event log for related error messages. Resolve any errors and restart the database. Cannot close event log because there are still event handle users active. The server log says this: Error: 9001, Severity: 21, State: 1. Context: The server in question is holding databases for a multi-tenant application and lately it's been under quite heavy loads. It has something like 3k small databases on it and these errors have been coming in the last week. We have a work-around right now, which is taking the database offline then bringing it online again. Any ideas why this is happening and how we can fix it?

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• Recommendations for screen-capture tool that retains menus and mouse pointer

  - by Chris Farmer

  There are several screen capture tool questions already on this site, but I think I have a slight tweak to the usual. I'd like a handy screen capture utility that can: Run in Windows 7 Capture a sub-region of the screen Show the current state of the mouse cursor and any active menus I'd like to use it for writing docs that refer to specific application menu items. I like the built-in snipping tool in Windows 7, but the act of using it dismisses my menus, and it doesn't get the mouse cursor either. Do any such tools exist? EDIT: Ahh, I wasn't familiar with the "delayed capture" options of these tools, but they all seem to fit the bill. Thanks!

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• OSX 10.6 integration into NIS/netgroup/automount infrastructure

  - by mdpc

  I have an existing infrastructure where accounts are maintained under NIS (yp) with no local unix accounts. Also, all the standard maps including hosts, mail aliases, netgroups, etc...are maintained in this form. Extensive use of the UNIX/Linux automounter with items scattered over the network on NFS servers. There are NO ACLs on any local or shared files. All mail needs to use basically the nullclient sendmail configuration feeding into a different system. I now have a requirement to integrate an Apple OSX 10.6 system into this environment and make it run seamlessly. My initial reading and second-hand information seems to indicate that this may not be possible on the native OSX 10.6 system. I'm concerned. Any ideas as to how to accomplish this task and make everybody happy? Thanks PS: I have never used an Apple OSX system.

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• Will disk cloning resolve bad stripes on RAID?

  - by user13323

  Hi. We have a logical RAID1 drive in bad stripes state, which kept that status even after replacement and rebuilding of both drives, and gives errors in Windows logs about failure of writing to disk. IBM support suggests erasing and re-creating the RAID, then re-installing the Windows. The resulting down-time unacceptible for us, so we want to clone the RAID (via Acronis True Image), erase and re-create the RAID, then dump the cloned data back. Following IBM logic where RAID erasing and re-creation resets the whole RAID meta-data, this should clear the bad-stripes status, and start from a blank page. Question is if such strategy is possible, and will produce the desired effect? Any idea is appreciated - thanks in advance!

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• Tool to monitor file size, file existence, parse xml, etc

  - by Artur Carvalho

  I'm trying to find some tool that helps me monitor several things. What are some requirements: Shows results on a web page. Checks existence of files/folders Checks sizes of files/folders Can parse xml files Can have several status depending if it's for instance, after 9pm Ping workstations/Servers to ensure they are on or off create daily/weekly/monthly reports (pdf, html, csv) show daily/weekly/monthly scheduled tasks check if specific users are logged in a machine check which users are logged in in a machine I've looked into some solutions but could not find what I wanted. Usually tools like nagios are more focused in servers, and spiceworks is not so specific. At this point I'm using a little powershell script that does several of these items, but before losing more time probably reinventing the wheel, what tools are out there? Thank you in advance.

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• iPhone VPN with OpenSwan fails to reconnect

  - by gilm

  I have managed to configure VPN with iPhone and OpenSWAN on Linux 2.6. Though, when disconnecting the iphone and reconnecting, it times out. I have found that: 1) no packets are being sent when you disconnect iPhone from VPN. 2) when reconnecting, pluto picks up on the older socket and tries to use that state machine. which then fails and iPhone retransmits until times out. I'm using the latest version in git, including #1204 patch. I see the NAT-T patch debug lines in the logs. But still, no cookie. Help?

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• Windows 7 - cancel mirror synchronisation

  - by Chris W

  I've got basic disk OS managed disk mirroring setup in Windows 7 for a couple of volumes. After a power failure the mirrors are currently resynching. These are only small volumes of data but the sync has not completed after more than 24 hours. Is there any way to stop this as it's driving me nuts? I need to get the machine back to a usable state to get some work done but it's a bit of a dog whilst this synch is going on. I've tried removing the mirrors but it won't let me do that whilst the re-sync is in progress.

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• Windows 7 - cancel mirror synchronisation

  - by Chris W

  I've got basic disk OS managed disk mirroring setup in Windows 7 for a couple of volumes. After a power failure the mirrors are currently resynching. These are only small volumes of data but the sync has not completed after more than 24 hours. Is there any way to stop this as it's driving me nuts? I need to get the machine back to a usable state to get some work done but it's a bit of a dog whilst this synch is going on. I've tried removing the mirrors but it won't let me do that whilst the re-sync is in progress.

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• Exim 4.63 on CentOS: sending mail from server app through localhost - failed on authentication

  - by Stas

  Hi! I am trying to send mail from my java application simply connecting on localhost:25 with empty login and password (I have to state them due to API). Mail sending is failed then with 2010-03-21 12:20:01 login authenticator failed for localhost [127.0.0.1]: 535 Incorrect authentication data On the other hand, when I am sending mail with telnet by: $ telnet localhost 25 ehlo ... mail from:... rcpt to:... data: ... it works perfectly. Any clues?

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• smartctl or hddtemp for xvda [on hold]

  - by HST

  I'm trying to check the state of the drives on a remote server running Debian wheezy. I'm using a software RAID10 on top of, I guess, xen, since the entries in /dev are /dev/xvda and /dev/xvdb But it I try smartctl -a /dev/xvda I get /dev/xvda: Unable to detect device type Smartctl: please specify device type with the -d option. I've tried various device type guesses, none work Similar problem with hddtemp, which reports ERROR: /dev/xvda: can't determine bus type (or this bus type is unknown) I've searched the smartmontools documentation, but can't find any discussion of virtual disks. . . How do I get behind the virtualisation to something smart tools or hddtemp can work with?

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• USB resets with Ubuntu 9.10

  - by Grumbel

  Since the upgrade to Ubuntu 9.10 I have issues with getting USB device resets on my Maxtor OneTouch USB harddrive: Nov 9 20:54:37 localhost kernel: [32459.100021] usb 2-2: reset high speed USB device using ehci_hcd and address 4 Nov 9 21:54:37 localhost kernel: [36059.100017] usb 2-2: reset high speed USB device using ehci_hcd and address 4 Nov 9 23:24:37 localhost kernel: [41459.112025] usb 2-2: reset high speed USB device using ehci_hcd and address 4 The device itself continues to work fine, the resets however wake the device out of its sleep state and thus cause it to spin up, which is very annoying. Interestingly, as the log shows, the resets happen at pretty regular intervals (i.e. one hour or half an hour), not randomly. An USB card reader seems to have the same issues, while another USB harddrive from a different manufactor works fine on the same PC. What could be causing this and how could I fix it?

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• Try exchange in real domain

  - by AndreaCi

  We (as a company) 'd like to try exchange server to replace our mail server. I downloaded the demo version from Microsoft website, but during the installation it wants administrator access to domain to edit the Active Directory database structure. The test will last for (at least) a month to see if it will bring real advantages to our management systems. Here is my question: Is it "dangerous"? If I uninstall the exchange server everything will be reverted to previous state? I'm kind of "scared" about the changes he may apply to our domain controllers.

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• Connecting HDMI MediaCenter PC to Standard Def TV

  - by Adam

  I just purchased a ASRock ION 330-HT-BD to use as my new Media Center. Sadly I still have a crappy standard-def old tube TV for the foreseeable future. The TV has Coax & Composite (Red, White, Yellow) inputs, and my new MediaCenterr has HDMI & VGA outputs. So my question is, how do I hook up the two together! All of the HDMI-to-Composite cables I have found explicitly state that they can not be used to hook a PC up to a TV. Any ideas?

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• Cannot login to OpenManage Server Administrator

  - by ejel

  After freshly installed OpenManage Server Administrator from the CD that comes with my new server, Dell PowerEdge T110, I still could not figure out how to login successfully to the application. The server is running Windows 2008 SR2 Foundation and serves as a domain controller. I access its web interface locally using Firefox 3.6. On the login page and choose local system login. OMSA user's guide seems to state that I should be able to login using an Active Directory user. I tried Administrator, my_domain\Administrator, a a few combinations with the correct password. But none of them can logged in. Does Server Administrator requires any additional treatment to the user accounts, or what are the steps I missed here?

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• How to troubleshoot down terminal service/CITRIX sessions, when the process just won't terminate?

  - by Chad

  Running a CITRIX presentation server farm, version 4.5.6 on Windows 2003 sp2. In the CITRIX Access Management Console, I sometimes get a session that shows it's in a down state - but has none of the normal info associated with it (user name, applications, client name, idle time, etc...). It does say which servers it's on, so I check out that server's terminal services manager. I can see the down session but cannot reset it. I get: (Error 7024 - the requested operation cannot be completed because the terminal connection is currently busy processing a connect, disconnect, reset, or delete operation.) So I go to the task manager and look up the processes running under that session id. I see it's one of my published apps, but when I try to end the process - it simply does nothing and the process remains. Any way to get rid of these sessions without a server reboot?

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• Hyperthreading vs. SQL Server & PostgreSQL

  - by IanC

  I have read that hyperthreading is a "performance killer" when it comes to DBs. However, what I read didn't state which CPUs. Further, it mostly indicated that I/O was "cut to < 10% performance". That logically doesn't make sense since I/O is primarily a function of controllers and disks, not CPUs. But then no one ever said bugs made sense. What I read also stated that SQL Server could put two parallel query ops onto 1 logical core (2 threads), thereby degrading performance. I have a hard time believing SQL Server's architects would have made such an obvious miscalculation. Does anyone have and data on how hyperthreading on current generation CPUs affects either of the RDBMSs I mentioned?

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• Unable to access intel fake RAID 1 array in Fedora 14 after reboot

  - by Sim

  Hello everyone, 1st I am relatively new to linux (but not to *nix). I have 4 disks assembled in the following intel ahci bios fake raid arrays: 2x320GB RAID1 - used for operating systems md126 2x1TB RAID1 - used for data md125 I have used the raid of size 320GB to install my operating system and the second raid I didn't even select during the installation of Fedora 14. After successful partitioning and installation of Fedora, I tried to make the second array available, it was possible to make it visible in linux with mdadm --assembe --scan , after that I created one maximum size partition and 1 maximum size ext4 filesystem in it. Mounted, and used it. After restart - a few I/O errors during boot regarding md125 + inability to mount the filesystem on it and dropped into repair shell. I commented the filesystem in fstab and it booted. To my surprise, the array was marked as "auto read only": [root@localhost ~]# cat /proc/mdstat Personalities : [raid1] md125 : active (auto-read-only) raid1 sdc[1] sdd[0] 976759808 blocks super external:/md127/0 [2/2] [UU] md127 : inactive sdc[1](S) sdd[0](S) 4514 blocks super external:imsm md126 : active raid1 sda[1] sdb[0] 312566784 blocks super external:/md1/0 [2/2] [UU] md1 : inactive sdb[1](S) sda[0](S) 4514 blocks super external:imsm unused devices: <none> [root@localhost ~]# and the partition in it was not available as device special file in /dev: [root@localhost ~]# ls -l /dev/md125* brw-rw---- 1 root disk 9, 125 Jan 6 15:50 /dev/md125 [root@localhost ~]# But the partition is there according to fdisk: [root@localhost ~]# fdisk -l /dev/md125 Disk /dev/md125: 1000.2 GB, 1000202043392 bytes 19 heads, 10 sectors/track, 10281682 cylinders, total 1953519616 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x1b238ea9 Device Boot Start End Blocks Id System /dev/md125p1 2048 1953519615 976758784 83 Linux [root@localhost ~]# I tried to "activate" the array in different ways (I'm not experienced with mdadm and the man page is gigantic so I was only browsing it looking for my answer) but it was impossible - the array would still stay in "auto read only" and the device special file for the partition it will not be in /dev. It was only after I recreated the partition via fdisk that it reappeared in /dev... until next reboot. So, my question is - How do I make the array automatically available after reboot? Here is some additional information: 1st I am able to see the UUID of the array in blkid: [root@localhost ~]# blkid /dev/sdc: UUID="b9a1149f-ae11-4fc8-a600-0d77354dc42a" SEC_TYPE="ext2" TYPE="ext3" /dev/sdd: UUID="b9a1149f-ae11-4fc8-a600-0d77354dc42a" SEC_TYPE="ext2" TYPE="ext3" /dev/md126p1: UUID="60C8D9A7C8D97C2A" TYPE="ntfs" /dev/md126p2: UUID="3d1b38a3-b469-4b7c-b016-8abfb26a5d7d" TYPE="ext4" /dev/md126p3: UUID="1Msqqr-AAF8-k0wi-VYnq-uWJU-y0OD-uIFBHL" TYPE="LVM2_member" /dev/mapper/vg00-rootlv: LABEL="_Fedora-14-x86_6" UUID="34cc1cf5-6845-4489-8303-7a90c7663f0a" TYPE="ext4" /dev/mapper/vg00-swaplv: UUID="4644d857-e13b-456c-ac03-6f26299c1046" TYPE="swap" /dev/mapper/vg00-homelv: UUID="82bd58b2-edab-4b4b-aec4-b79595ecd0e3" TYPE="ext4" /dev/mapper/vg00-varlv: UUID="1b001444-5fdd-41b6-a59a-9712ec6def33" TYPE="ext4" /dev/mapper/vg00-tmplv: UUID="bf7d2459-2b35-4a1c-9b81-d4c4f24a9842" TYPE="ext4" /dev/md125: UUID="b9a1149f-ae11-4fc8-a600-0d77354dc42a" SEC_TYPE="ext2" TYPE="ext3" /dev/sda: TYPE="isw_raid_member" /dev/md125p1: UUID="420adfdd-6c4e-4552-93f0-2608938a4059" TYPE="ext4" [root@localhost ~]# Here is how /etc/mdadm.conf looks like: [root@localhost ~]# cat /etc/mdadm.conf # mdadm.conf written out by anaconda MAILADDR root AUTO +imsm +1.x -all ARRAY /dev/md1 UUID=89f60dee:e46a251f:7475814b:d4cc19a9 ARRAY /dev/md126 UUID=a8775c90:cee66376:5310fc13:63bcba5b ARRAY /dev/md125 UUID=b9a1149f:ae114fc8:a6000d77:354dc42a [root@localhost ~]# here is how /proc/mdstat looks like after I recreate the partition in the array so that it becomes available: [root@localhost ~]# cat /proc/mdstat Personalities : [raid1] md125 : active raid1 sdc[1] sdd[0] 976759808 blocks super external:/md127/0 [2/2] [UU] md127 : inactive sdc[1](S) sdd[0](S) 4514 blocks super external:imsm md126 : active raid1 sda[1] sdb[0] 312566784 blocks super external:/md1/0 [2/2] [UU] md1 : inactive sdb[1](S) sda[0](S) 4514 blocks super external:imsm unused devices: <none> [root@localhost ~]# Detailed output regarding the array in subject: [root@localhost ~]# mdadm --detail /dev/md125 /dev/md125: Container : /dev/md127, member 0 Raid Level : raid1 Array Size : 976759808 (931.51 GiB 1000.20 GB) Used Dev Size : 976759940 (931.51 GiB 1000.20 GB) Raid Devices : 2 Total Devices : 2 Update Time : Fri Jan 7 00:38:00 2011 State : clean Active Devices : 2 Working Devices : 2 Failed Devices : 0 Spare Devices : 0 UUID : 30ebc3c2:b6a64751:4758d05c:fa8ff782 Number Major Minor RaidDevice State 1 8 32 0 active sync /dev/sdc 0 8 48 1 active sync /dev/sdd [root@localhost ~]# and /etc/fstab, with /data commented (the filesystem that is on this array): # # /etc/fstab # Created by anaconda on Thu Jan 6 03:32:40 2011 # # Accessible filesystems, by reference, are maintained under '/dev/disk' # See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info # /dev/mapper/vg00-rootlv / ext4 defaults 1 1 UUID=3d1b38a3-b469-4b7c-b016-8abfb26a5d7d /boot ext4 defaults 1 2 #UUID=420adfdd-6c4e-4552-93f0-2608938a4059 /data ext4 defaults 0 1 /dev/mapper/vg00-homelv /home ext4 defaults 1 2 /dev/mapper/vg00-tmplv /tmp ext4 defaults 1 2 /dev/mapper/vg00-varlv /var ext4 defaults 1 2 /dev/mapper/vg00-swaplv swap swap defaults 0 0 tmpfs /dev/shm tmpfs defaults 0 0 devpts /dev/pts devpts gid=5,mode=620 0 0 sysfs /sys sysfs defaults 0 0 proc /proc proc defaults 0 0 [root@localhost ~]# Thanks in advance to everyone that even read this whole issue :-)

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• linux audit - exclude a process that updates the time

  - by user185704

  I have set my auditd rules to log when the system time is changed However, our servers are VMs and thus have problems with the time drifting out. We needed to solve this issue so we used a VMware tool to regularly synchronize the time. My problem now is that my audit logs are overwhelmed with time change entries like this: Jun 1 15:08:39 ***** audispd: node=****** type=SYSCALL msg=audit(1338559719.053:344291): arch=c000003e syscall=159 success=yes exit=5 a0=7ffff2084050 a1=0 a2=144b a3=485449575f4c4c55 items=0 ppid=1 pid=1348 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="vmtoolsd" exe="/usr/lib/vmware-tools/bin64/appLoader" key="time_change" How can I exclude this vmware tool from the audit, but still capture a user changing the time? Here are my current audit rules to capture time changes: -a always,exit -F arch=b32 -S adjtimex -S settimeofday -k time_change -a always,exit -F arch=b32 -S clock_settime -k time_change

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• eMail with Conflicting Headers not blocked in MS365

  - by John Meredith Langstaff

  On occasion, a company receives eMail with two header fields (“Received” and “From”) containing data that contradict each other drastically. Should they not expect their anti-spam system to flag or block items with contradictions in these fields? For example, they received an eMail which contained [almost exactly] these two headers: Received: from [107.52.51.26] by web315204.mail.ne1.yahoo.com via HTTP; Mon,28 Oct 2013 04:28:04 PDT From: Barry Smith [email protected] Obviously, eMail from an @att.net address isn’t coming from a server on the domain yahoo.com, and Yahoo isn’t forwarding AT&T’s eMail. There were no other headers indicating that the item was sent “OnBehalfOf”, or “Forwarded-by”, or “By_Proxy” or any other such. Should I write a utility to scan incoming eMail for such conflicts, or look more closely at their spam filtering to block this kind of eMail? Their eMail system is Hosted Exchange on MS-365. My central question is, where specifically do I look in MS-365 to get this type of conflicted eMail blocked?

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