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• Server not sending a SYN/ACK packet in response to a SYN packet

  - by jeff

  Using iptraf, tcpdump and wireshark I can see a SYN packet coming in but only the ACK FLAG is set in reply packet. I'm running Debian 5 with kernel 2.6.36 I've turned off window_scaling and tcp_timestamps, tcp_tw_recycle and tcp_tw_reuse: cat /etc/sysctl.conf net.ipv4.tcp_tw_recycle = 0 net.ipv4.tcp_tw_reuse = 0 net.ipv4.tcp_window_scaling = 0 net.ipv4.tcp_timestamps = 0 I've attached an image of the wireshark output. http://imgur.com/pECG0.png Output to netstat netstat -natu | grep '72.23.130.104' tcp 0 0 97.107.134.212:18000 72.23.130.104:42905 SYN_RECV I've been doing everything possible to find a solution and have yet to figure out the problem, so any help/suggestions are much appreciated. UPDATE 1: I've set tcp_syncookies = 0 and noticed I am now replying with 1 SYN+ACK for every 50 SYN requests. The host trying to connect is sending a SYN request about once every second. PCAP FILE

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• rsyslog from Heroku drain creates empty log files

  - by Jeff Lee

  I'm sending logs from my Heroku app to an rsyslog server, but the resulting log files seem to come up empty. The rsyslog configuration for receiving remote messages is as follows: $template RemoteDailyLog,"/var/log/remote/%hostname%/%$year%/%$month%/%$day%.log" :fromhost-ip, !isequal, "127.0.0.1" -?RemoteDailyLog & ~ My complete rsyslog configuration is available in this paste. This configuration appears to create the directories correctly. I see the Heroku app's logging hostname (of the form "d.xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx") appear in /var/log on the rsyslog host, which implies that log messages are successfully making it to the logging daemon, but the resulting logfiles are zero-size. I'm guessing the issue is with rsyslog, rather than Heroku, but I'm not sure where to look next.

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• How do I improve my screen resolution in Windows Remote Desktop?

  - by Jeff

  I'm RDP'ing into a Win2K3 machine from a WinXP machine, and I cannot stand the low screen resolution I get on the Win2K3 box. Text is too large and the graphics/colors aren't very smooth. How do I improve this? If I right-click on the desktop of the remote machine and go to Properties - Settings, I see that the screen resolution is set to 1280x1024 (should be okay, I would think), and the color quality is Medium (16 bit) (not optimal) and I don't have the option to change either setting (because they're set in the .rdp file for the session, right?). If I move over to the Appearance tab, I see that font size is set to Normal, with no option to make it smaller. The thing is, these settings are close to what I have on the XP machine I'm RDP'ing in from. The only difference (in those settings) is the color quality, which is 32 bit. Any ideas on how I can improve the situation? Other tidbits: The graphics card on the Win2K3 machine is ATI ES1000. I think I have the latest drivers for it. I'm running VMware Workstation on the Win2K3 machine, and if I create a Win2K3 VM and RDP into it from the XP machine, the resolution is just fine.

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• Timezone reset on Amazon AMI update

  - by Jeff

  I have a server set up through Amazon AWS. It's Amazon's RHEL-based AMI. When I initially booted up the machine, I set the proper timezone by creating a symlink: ln -sf /usr/share/zoneinfo/America/Los_Angeles /etc/localtime This works just fine, but whenever Amazon provides an update to their AMI the timezone automatically reverts to UTC. Is there a way around this or does it have to be manually set after each update?

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• apache webserver unresponsible with server-status showing all child processes waiting for connection

  - by Jeff

  My setup: i have 3 nearly identical webserver machines serving the same high loaded dynamic website with simple load balancing over dns. The service has been working for over two ears with the same apache config. apache2, php5, ubuntu 8.04 linux 2.6.24-29-server My problem: since about two weeks i'm experiencing problems with this config. Nearly every day i have one small moment about 5 minutes, in which the website is unreachable. I'm still able to login to the servers over ssh. If i run htop, i see the machine simply doing nothing. i have about 1000 apache processes running, but no cpu activity. i've used the apache mod_status to debug this situation. the process scoreboard looks like this: _C.___K_______________________R._______.__K_K____K___C_______.__ _______C__________.___________________________________.________C _.____K__________K___K_WK_____._K_____________________________._ W______K__________K________.____________________._______C_______ _C_.__K__K____.._.._____________________________________C_______ _R___________K___.______C________.C_________.______._____C______ ____________KKC____K_____K__WC_________________C_____.__.____.__ _____________________C_________K______.____C______._____________ _.___C____.___.___________________________.K______.____K________ W__.___________________C.__.____K________K_______R_._.__._______ __C__C_.__________C__C_______._____W______________C_.___C_______ ____.______C_____________C________.____C____________.________._K __.__________.K_____________K_________._____C____.K__________KW_ __K.W________R_________._______.___W___________.____.__K_____W__ W___.___..________W____K Scoreboard Key: "_" Waiting for Connection, "S" Starting up, "R" Reading Request, "W" Sending Reply, "K" Keepalive (read), "D" DNS Lookup, "C" Closing connection, "L" Logging, "G" Gracefully finishing, "I" Idle cleanup of worker, "." Open slot with no current process So the most of the processes are just waiting for connection. after about 5 minutes the situation will return to normal: i have lot least processes on every machine, the most workers have the "."-status (meaing they are open to process a request) and of course the website is reachable! so i'm trying to find something in the logs, but there is simply nothing... the apache access log is silent for about 4 minutes, the same is for the error log. i also can not figure out anything wrong in other system logs. the situation is the same on all 3 webservers (all of them have this load peak and unresposibility at the same time), so i do not thing this is hardware related. but i think, this might be related to some network (tcp) issue. any ideas? EDIT: some more information, that i have just discovered: it has just happened again. and i was able to verify that i'm also not able to connect locally when this problem occurs. i have made some connection statistics with the following command after it happend netstat -an|awk '/tcp/ {print $6}'|sort|uniq -c 109 CLOSE_WAIT 2652 ESTABLISHED 2 FIN_WAIT1 11 LAST_ACK 12 LISTEN 91 SYN_RECV 1 SYN_SENT 16 TIME_WAIT If i execute the same command some time later, i have something like this: 4 CLOSING 108 ESTABLISHED 18 FIN_WAIT1 182 FIN_WAIT2 37 LAST_ACK 12 LISTEN 50 SYN_RECV 11276 TIME_WAIT So in the normal situation i have only 100-200 open connections by clients beeing handled by apache in this moment. when i have this "crash", i have a lot more connections. what is the best way to analyse this? EDIT2: the important lines in apache2.conf are: KeepAlive On MaxKeepAliveRequests 20 KeepAliveTimeout 1 <IfModule mpm_prefork_module> ServerLimit 920 StartServers 30 MinSpareServers 80 MaxSpareServers 120 MaxClients 920 MaxRequestsPerChild 700 </IfModule> it is an apache2 prefork with php_mod. the server has 8GB ram and a 4gb swap partition.

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• Do RAID controllers commonly have SATA drive brand compatibility issues?

  - by Jeff Atwood

  We've struggled with the RAID controller in our database server, a Lenovo ThinkServer RD120. It is a rebranded Adaptec that Lenovo / IBM dubs the ServeRAID 8k. We have patched this ServeRAID 8k up to the very latest and greatest: RAID bios version RAID backplane bios version Windows Server 2008 driver This RAID controller has had multiple critical BIOS updates even in the short 4 month time we've owned it, and the change history is just.. well, scary. We've tried both write-back and write-through strategies on the logical RAID drives. We still get intermittent I/O errors under heavy disk activity. They are not common, but serious when they happen, as they cause SQL Server 2008 I/O timeouts and sometimes failure of SQL connection pools. We were at the end of our rope troubleshooting this problem. Short of hardcore stuff like replacing the entire server, or replacing the RAID hardware, we were getting desperate. When I first got the server, I had a problem where drive bay #6 wasn't recognized. Switching out hard drives to a different brand, strangely, fixed this -- and updating the RAID BIOS (for the first of many times) fixed it permanently, so I was able to use the original "incompatible" drive in bay 6. On a hunch, I began to assume that the Western Digital SATA hard drives I chose were somehow incompatible with the ServeRAID 8k controller. Buying 6 new hard drives was one of the cheaper options on the table, so I went for 6 Hitachi (aka IBM, aka Lenovo) hard drives under the theory that an IBM/Lenovo RAID controller is more likely to work with the drives it's typically sold with. Looks like that hunch paid off -- we've been through three of our heaviest load days (mon,tue,wed) without a single I/O error of any kind. Prior to this we regularly had at least one I/O "event" in this time frame. It sure looks like switching brands of hard drive has fixed our intermittent RAID I/O problems! While I understand that IBM/Lenovo probably tests their RAID controller exclusively with their own brand of hard drives, I'm disturbed that a RAID controller would have such subtle I/O problems with particular brands of hard drives. So my question is, is this sort of SATA drive incompatibility common with RAID controllers? Are there some brands of drives that work better than others, or are "validated" against particular RAID controller? I had sort of assumed that all commodity SATA hard drives were alike and would work reasonably well in any given RAID controller (of sufficient quality).

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• Why does my computer slow down so much when attaching Bluetooth dongle?

  - by Jeff Yates

  I have a Bluetooth dongle and I plugged it into my work laptop (a Dell Latitude D830). Windows detects the Generic Bluetooth USB or similar and then proceeds to go incredibly slow with a process, avp.exe¹, taking 50% CPU. The System Idle process is getting most of the other 50% CPU and the avp.exe process is only at Normal priority. The machine doesn't seem to recover, so I had to turn the power off and reboot. Now, I haven't installed the drivers yet for the device, which I am doing now and I expect it to resolve the problem, so I am not asking how to fix this. I would rather know why Windows goes so slow in the first place. What is it trying to do and failing at so badly that it barely crawls? ¹ Part of Kaspersky Internet Security suite

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• Manually accessing GMail via IMAP

  - by Jeff Mc

  I'm trying to connect to gmail imap, but I am unable to execute any commands after login. I'm running openssl s_client -connect imap.gmail.com:993 to connect then, * OK Gimap ready for requests from 128.146.221.118 42if6514983iwn.40 . CAPABILITY * CAPABILITY IMAP4rev1 UNSELECT IDLE NAMESPACE QUOTA XLIST CHILDREN XYZZY SASL-IR AUTH=XOAUTH . OK Thats all she wrote! 42if6514983iwn.40 . LOGIN {email removed} {password removed} * CAPABILITY IMAP4rev1 UNSELECT LITERAL+ IDLE NAMESPACE QUOTA ID XLIST CHILDREN X-GM-EXT-1 UIDPLUS COMPRESS=DEFLATE . OK {email removed} authenticated (Success) . CAPABILITY at which point it simply hangs with the connection open. I'm guessing gmail pushes you off to a node in a cluster after it authenticate me?

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• Loss of network connectivity when playing video on Optoma HD180 projector

  - by Jeff Fohl

  Hi Folks - New to Super User, so I hope this question fits in with the guidelines. Very strange problem I am having, and I am at a loss as to how to continue troubleshooting this one. The basic problem is that when I attempt to watch streamed video on a particular display device (an Optoma HD180 projector), my network connectivity drops like a stone to barely measurable levels. This is my setup: I have a Dell H2C 730x running Windows 7 64bit. This particular computer has two ATI Radeon HD 4800 video cards. I have two Samsung 22" monitors connected to one card, and an Optoma HD180 digital projector connected to the other card via an HDMI cable. My internet connection is normally a reliable 6Mbps. The problem I am having occurs when I stream video (or even just browse the web) on the Optoma Projector. When I do this, my internet connection drops to practically zero (just a few kilobits per second). When I move the browser away from the projector, and over to one of my Samsung monitors, the internet connection comes right back. Note that the Optoma projector is on and enabled as a third monitor all this time. I can move the mouse around on the projector without triggering the problem. I tried pinging my router when I was playing a movie on one of the monitors, and I get a 1 millisecond response. However, when I have the movie playing on the Optoma projecter, pinging the router gives me response times in the hundreds of milliseconds, or times out completely. So, it clearly is something local to my machine - and not some sort of throttling occurring down the line. I would think that it is possibly something to do with the HDMI driver conflicting somehow with my network driver (which is a USB-based wireless connection). This one has me really stumped. Anyone have any ideas?

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• Website doesn't work when missing "www"

  - by jeff

  Hello everyone, Does anyone know the solution to this problem? I checked my zone file and there are 2 A records mydomainname.com. 14400 IN A ip.address.x.x localhost 14400 IN A 127.0.0.1 I'm On CentOs 5.2, by the way. Thanks for the help!!

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• exchange 2003 to 2007, recipient update services

  - by Jeff

  going to try my best to explain: our exchange 2003 was migrated to exchange 2007 (was not here for the migration). Looking in active directory sites and services - services - Microsoft exchange - company - address list container - recipient update services i have two recipient update services 1) recipient update service (enterprise configuration) 2) recipient update service (my-domain) my guess is one of these is left from the old exchange 2003. (im guessing this because the migration was not done properly, the exchange server was never actually uninstall, it was just taken offline, and then later disposed of). could having two of these cause me issues, and if so, how do i know which one i could get rid of ? Im asking because i honestly have no idea. it might even be nothing. thanks

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• Which Twitter app do you use?

  - by Jeff Fritz

  It seems like everyone is writing their own Twitter front-end application nowadays. So I must ask: What is your preferred Twitter front-end management application? Please discuss: Form Factor: Desktop, Mobile, Web based OS Support: Windows, Mac, Linux, iPhone, BlackBerry, etc Killer Feature that made you convert Please try to format your responses using the bullet points above. This way, we can all easily compare features. Please list 1 app per response

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• Check which files a program uses.

  - by jeff johanson

  Is there any application that will check which files a running program reads, modifies etc. and can present me with a list of these?

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• 2 subnets off of 1 PC with 2 NICs

  - by Jeff

  I have a general setup I'd like to do with some IP cameras. This seems like it will work but I think I may be missing something. Our system consists of a video recorder PC connected to a switch which is connected to a number of IP cameras. I'd like to connect this system into an existing network but I want it on a different subnet. The main reason is that the cameras use a lot of bandwidth that I don't want slowing down the existing network. My idea was to install 2 NICs on the video recorder pc. 1 NIC connects to the existing network on 192.169.1.x for example, and the other NIC connect to the switch with the cameras. This NIC would be 192.168.100.x. Then we could remote to the video recorder PC with a GoToMyPC type thing for administration via the existing network. I've included a diagram of how I see this working but I'm a little fuzzy on the setup of the NICs (if this can work at all). My problem may be trying to deal with 2 subnets without a router but It really doesn't seem like it's necessary in this situation. BTW, gliffy is cool.

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• dd-wrt router firmware QoS troubleshooting

  - by Jeff Atwood

  I've been using the dd-wrt firmware on my router and I like it a lot! But -- I'm not sure the quality of service (QoS) is working on it. I have it set up as follows: http, port 80 -- Premium bittorrent, port 6969 -- Bulk https, port 443 -- Premium dns, port 53 -- Premium Per the QoS documentation, these levels are: bandwidth is allocated based on the following percentages of uplink and downlink values for each class: Exempt: 100mbps - ignores global limits. Premium: 75% - 100% Express: 15% - 100% Standard: 10% - 100% Bulk: 1.5% - 100% This doesn't entirely seem to work, though -- with busy torrents going I get major pauses in my web browsing which sucks! The QoS documentation gives some steps to check the QoS ... What you'll be interested to look at will be the first set of source and destination IP, including the port numbers. Next the presence of l7proto and the "mark" field. The entries indicate the current live connection QoS priority applied on them based on the "mark" field. The "mark" values correspond to the following Exempt: 100 Premium: 10 Express: 20 Standard: 30 Bulk: 40 (no QoS matched): 0 You may see "mark=0" for some l7proto service even though they are in configured in the list of QoS rules. This may mean that the layer 7 pattern matching system didn't match a new or changed header for that protocol. Custom service on port matches will usually take care of these. On port 6969 (bittorrent) I see a weird mixture of stuff with mark=0 and mark=40 like so cat /proc/net/ip_conntrack udp 17 105 src=98.162.182.42 dst=1.2.3.4 sport=64512 dport=6969 packets=3 bytes=290 src=10.0.0.2 dst=98.162.182.42 sport=6969 dport=64512 packets=4 bytes=202 [ASSURED] mark=0 secmark=0 use=1 tcp 6 117 TIME_WAIT src=98.248.173.174 dst=1.2.3.4 sport=51114 dport=6969 packets=12 bytes=704 src=10.0.0.2 dst=98.248.173.174 sport=6969 dport=51114 packets=10 bytes=440 [ASSURED] mark=40 secmark=0 use=1 tcp 6 598 ESTABLISHED src=165.132.128.201 dst=1.2.3.4 sport=57218 dport=6969 packets=8024 bytes=9919881 src=10.0.0.2 dst=165.132.128.201 sport=6969 dport=57218 packets=4211 bytes=239607 [ASSURED] mark=0 secmark=0 use=1 tcp 6 586 ESTABLISHED src=68.46.9.24 dst=1.2.3.4 sport=64688 dport=6969 packets=6 bytes=490 src=10.0.0.2 dst=68.46.9.24 sport=6969 dport=64688 packets=8 bytes=944 [ASSURED] mark=40 secmark=0 use=1 udp 17 45 src=222.254.228.38 dst=1.2.3.4 sport=25438 dport=6969 packets=5 bytes=454 src=10.0.0.2 dst=222.254.228.38 sport=6969 dport=25438 packets=3 bytes=154 [ASSURED] mark=0 secmark=0 use=1 ( full file visible at http://pastebin.com/AZE6EtWm ) I've been playing around with this log for a little while and I can't see any patterns! Why is some port 6969 bittorrent traffic tagged mark=0 (not matched) by dd-wrt's QoS while others are tagged mark=40 (Bulk) .. any ideas?

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• Autodiscover service seems to reply with User Principal Name instead of email address

  - by Jeff McJunkin

  After this latest round of Windows updates (on 1/11/11, in fact) my Exchange 2007 server of course rebooted. This may have had the side effect of making any changes I'd inadvertently made take effect. Since then, the Autodiscover service in Exchange 2007 from Outlook 2007 seems to reply with the User Principal Name ([email protected] instead of [email protected]). I'm specifically seeing this from within the "Test Email AutoConfiguration" tool in Outlook (the UPN appears in the first text box labeled "E-mail") and when creating a new profile in Outlook. If I disregard the UPN and instead fill in my email address, Autodiscover works as expected and I can connect without issue. I've confirmed using ADSI Edit that the SMTP email address is properly set for my users. I even went a bit crazy and set the UPN to the email address using ADSI Edit. I've re-installed the Client Access role on the server in question. Exchange server is Server 2008, 64-bit of course. Clients are mostly XP 32-bit, though the issue happens from a Windows 7 machine as well.

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• PHP on IIS7 not showing pages

  - by Jeff

  I have a PHP website on a Windows 7 machine I'm working with and it cannot be viewed by any browser - IE, Chrome, Firefox. When navigating to the root of the website (default index.php) the browser reports it cannot find the address. Not a 404 error from the webserver, just as if it cannot resolve the name. Other websites in the same default web application that are also PHP work perfectly. I've aligned all folder permissions and everything else but this has got me stumped. I even went as far to create a new folder and throw in a test phpinfo() page and it worked. Copied this website's content to the new folder and it cannot find the index.php page. I checked all setting I know and can't seem to find what I'm missing. Anyone else encounter this issue? Remember the fix for it?

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• Cisco Configuration backup with Windows Script.

  - by Jeff

  We have a client with a lot of Cisco Devices and we would like to automate the backups of these devices through telnet. We have both 2003 and 2008 servers and ideally use tftp to back it up. I wrote this: Set WshShell = WScript.CreateObject("WScript.Shell") Dim fso Set fso = CreateObject("Scripting.FileSystemObject") Dim ciscoList ciscoList = "D:\Scripts\SwitchList.txt" Set theSwitchList = fso.OpenTextFile(ciscoList, 1) Do While theSwitchList.AtEndOfStream <> True cisco = theSwitchList.ReadLine Run "cmd.exe" SendKeys "telnet " SendKeys cisco SendKeys "{ENTER}" SendKeys "USERNAME" SendKeys "{ENTER}" SendKeys "PASSWORD" SendKeys "{ENTER}" SendKeys "en" SendKeys "{ENTER}" SendKeys "PASSWORD" SendKeys "{ENTER}" SendKeys "copy startup-config tftp{ENTER}" SendKeys "(TFTP IP){ENTER}" SendKeys "FileName.txt{ENTER}" SendKeys "exit{ENTER}" 'close telnet session' SendKeys "{ENTER}" 'get command prompt back SendKeys "{ENTER}" SendKeys "exit{ENTER}" 'close cmd.exe On Error Resume Next WScript.Sleep 3000 Loop Sub SendKeys(s) WshShell.SendKeys s WScript.Sleep 300 End Sub Sub Run(command) WshShell.Run command WScript.Sleep 100 WshShell.AppActivate command WScript.Sleep 300 End Sub But the problem with this is the sendkeys are sent to the console session, I'm trying to find a solution that would not require a user to be logged in. Does anyone have any ideas? I have some knowlage of VBS, PowerShell and a pretty good grasp on batching.

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• How do I create a calendar appointment from an e-mail in Outlook 2011?

  - by Jeff O

  How do I create a calendar appointment from an e-mail in Outlook 2011 for Mac? In Windows, the e-mail content and attachments are carried over just by dragging and dropping. Dragging and dropping on the Mac doesn't work. Is there any other function to take an e-mail and make it a calendar appointment? I'm trying to avoid emailing it to myself. Edit: Since someone went to the trouble to make email2task, is it safe to assume this feature is not available otherwise?

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• Laptop battery holds charge, but won't charge any more.

  - by Jeff

  Ok, I'm sure I will need to replace either my battery or my AC adapter, but would rather not buy one if the other is the problem. My problem is. I have a Sager laptop that gets quite a bit of use. The charging has always been a little bit odd. If I was in the process of using it, it would charge just fine and stay On AC power. If I left it alone, however(power settings to ONLY turn off the monitor) in either Ubuntu or Windows 7 it decides that it didn't want to use AC power anymore and would just start draining the battery until it died. Now, suddenly, it won't charge at all. The capacity was great up to this point which happened in an instant. It will recognize the battery but won't see the AC power if plugged in while the battery is in. I can power up the laptop without the battery and it works fine. If I plug in the battery while powered up it will claim it's charging it, but it stays at the same percentage. If I unplug the power, it will switch over to Battery fine, but I have to power down and unplug the battery to get it back on AC power. I've had dying/dead batteries before but they typically won't hold a full charge anymore but it still winds up to 100% then drops quickly when unplugged. This seems more like a chip problem in the battery to me, but I'm not sure. Any ideas?

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• Network access lags for Win7 when server network utilization is high

  - by Jeff Miles

  We have a Dell PE2950 file server running Windows 2008, hosting a DFS namespace of ~1.2 TB. This server has two Broadcom 1Gbps NICs teamed together. When there is high traffic going to the server across the network (greater than 200 Mbps), any Windows 7 client accessing a DFS share at the time experiences severe performance problems. For example: Computer A has an AutoCAD drawing opened directly from the DFS share. Performance is normal, not causing any issues. Computer B begins a file transfer, putting a 11GB file onto a different DFS namespace, on the same server Computer A immediately notices lag while using AutoCAD. The cursor momentarily freezes within AutoCAD every 10 seconds or so, and any browsing of the DFS share is extremely slow. Computer B completes file transfer, and performance resumes to normal for Computer A. This is only affecting Windows 7 clients, using a variety of hardware (desktop + laptop). All of our Windows XP clients see no performance impact during the file transfer. Things I have tried with no change: Had Computer A work from an entirely different RAID array from the file transfer destination Updated NIC drivers on clients and server Enabled TCP offload and receive side scaling on the server NIC (previously disabled when the issue began) Antivirus disabled during file transfer I am currently having a user test applications other than AutoCAD when the file transfer occurs, and will update the question with that result. Does anyone have any recommendations for resolution or additional troubleshooting steps?

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• postfix takes 60-90ms to queue email -- normal?

  - by Jeff Atwood

  We're seeing some (maybe?) strange delays when submitting individual emails to our local Postfix server. To help diagnose the issue, I wrote a little test program which sends 5 emails: get smtp 1ms ( 1 ms) email 0 677ms (676 ms) email 1 802ms (125 ms) email 2 890ms ( 88 ms) email 3 973ms ( 83 ms) email 4 1088ms (115 ms) Discounting the handshaking in the first email, that's about 90ms per email. These timings have also been corroborated with another test app written by someone else using a different codepath, so it appears to be server related. I turned on detailed logging and I can see that the delay is between the end of message \r\n\r\n and the receive: [16:31:29.95] [SEND] \r\n.\r\n [16:31:30.05] [RECV] 250 2.0.0 Ok: queued as B128E1E063\r\n [16:31:30.08] [SEND] \r\n.\r\n [16:31:30.17] [RECV] 250 2.0.0 Ok: queued as 4A7DE1E06E\r\n [16:31:30.19] [SEND] \r\n.\r\n [16:31:30.27] [RECV] 250 2.0.0 Ok: queued as 68ACC1E072\r\n [16:31:30.28] [SEND] \r\n.\r\n [16:31:30.34] [RECV] 250 2.0.0 Ok: queued as 7EFFE1E079\r\n [16:31:30.39] [SEND] \r\n.\r\n [16:31:30.45] [RECV] 250 2.0.0 Ok: queued as 9793C1E07A\r\n The time intervals tell the story (discounting the handshaking required for the initial email) -- each email is waiting about 60-90 milliseconds for postfix to queue! This seems .. excessive .. to me. Is it "normal" for postfix to take 60-90 ms for every email you send it? Or do I just have unreasonable expectations? I would expect the local postfix server to queue the email in about 20ms, tops!

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• generate exchange CSR , exchange 2007 UCC. SSL CERT

  - by Jeff

  I want to make sure I am going this correctly. machine name: win2k8ex1. certificate: common name: owa.x.com subject alternative domains: autodiscover.x.com mail.x.com WIN2K8EX1 WIN2K8EX1.x.LOCAL when generating the CSR, i want to: New-ExchangeCertificate -GenerateRequest -SubjectName "c=US, o=x Inc., cn=owa.x.com" -DomainName mail.x.com,WIN2K8EX1,WIN2K8EX!.x.local,autodiscover.x.com -privatekeyexportable $true -Path c:\certificates\mcert.txt does this look correct? thanks!

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• How to install plug-in for Google Chrome

  - by Jeff

  Recently Google Chrome browser has been prompying me to install a plug-in everytime visit a web page. I always say Yes, install pulg-in, but that seems to have no effect. I tried following the "Trouble installing plug-ins" on the Chrome toolbar, but that seems to say Windows Media Player is the problem, but again, all my attempts at installing don't have any effect. As far as I know, I have not chnage anything, but Skype did recently upgrade itself. This is Windows 7 Professional 64-bit, and Chrome says it is up-to-date. I'm going to run a malware checker next, just in case - Thanks!

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• Numbering grouped data in Excel

  - by Jeff

  I have an Excel spreadsheet (2010) with data similar to this: Dogs Brown Nice Dogs White Nice Dogs White Moody Cats Black Nice Cats Black Mean Cats White Nice Cats White Mean I want to group these animals but I only care about species and color. I don't care about disposition. I want to assign group numbers to the set as shown here. 1 Dogs Brown Nice 2 Dogs White Nice 2 Dogs White Moody 3 Cats Black Nice 3 Cats Black Mean 4 Cats White Nice 4 Cats White Mean I was able to select all the species and colors, then from the data tab select 'advanced', then 'unique records only'. This collapsed the data so that I could number the visible rows. Then when I 'cleared' the filter I could easily just fill the blank areas under the numbers with the number above. The problem is that my real data has far too many rows for this to be practical. Also, the trick about entering 1 in the first cell, 2 in the cell below, selecting both then dragging the corner down to 'auto-number' doesn't seem to work when you're viewing filtered rows. Any way to do this?

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