Posts By: jonny

nslookup mx records

$ nslookupDefault Server:  dnsserver.comAddress:  111.222.111.222 > set q=mx> mymailserver.domain.com

Outlook Web Access Light To the Rescue

Microsoft’s deliberate feature omissions from OWA Light came to the rescue today when some of our users could not access OWA full during a recent spell were we had to use temporary mailbox databases while we repaired corrupted databases.While normal Outlook access appeared to be fine. OWA was giving the following error message for some… Read more »

Webcam on Ubuntu Just Works : Canyon CNR-WCAM413

I bought this particular webcam Canyon CNR-WCAM413 through Amazon as it was reported to just work on Linux – and it does on Ubuntu 8.04. Thanks to that french guy who laboured away at making drivers for all these devices! Plugged it in, booted up and an lsusb showed: jonny@nova:~$ lsusbBus 005 Device 003: ID… Read more »

Apache Troubleshooting

Occasionally some requests to web servers cause memory/cpu problems – for the wrong reasons and sometimes the right reasons. I recently had a problem with a Google Search Appliance crawling a Drupal calendar but in hindsight it was probably my own fault as I had been playing with some of the settings below.Which URLs are… Read more »

Change Hostname

Great article here.Check current hostname: hostname Change the hostname in the following files: vi /etc/sysconfig/networkvi /etc/hosts Now run: hostname mynewhostname restart networking /etc/init.d/network restart

Forward Root’s Mail

Forwarding the email sent to root on a system to another email address.vi /etc/aliases # Person who should get root’s mailroot:   myreal@emailaddress.com The run:/usr/bin/newaliases Test it.

OWA Change Password button

OWA allows for changing the AD/domain password but in our case this needed to be disabled as currently password syncronisation back out to the other directories is not possible.EMC > Server Config > Client Access , for each of the Client Access machines right-click the Outlook Web Access – owa option and choose Properties. In… Read more »

Ubuntu NumLock Problem in Hardy

Symptom: The Num Lock key does not seem to have any effect and the number keys do not work. Cause: Upgrading from Gutsy to Hardy Heron 8.04. I keep my home folder on a separate partition and have it mounted on boot so something in my home folder configuration folders/files must be having a conflict… Read more »

Offline Addressbook Problems

I had a customer who was having difficulty sending emails to a user who was given a new mailbox/email address. Updating the addressbook in Outlook (via Tools > Send and Receive > Download Address Book) was failing.I checked the folder (C:\Program Files\Microsoft Exchange\ClientAccess\OAB) on a recently rebuilt Client Access / front-end machine which did not… Read more »

mod_spamhaus on CentOS 5

Trying this module out on Centos 5 and Apache 2 to see how it goes (Debian install how-to here) yum install httpd-devel (if ‘which apxs’ shows nothing) wget http://www.mirrorservice.org/sites/download.sourceforge.net/pub/sourceforge/m/project/mo/mod-spamhaus/mod-spamhaus/0.7/mod-spamhaus-0.7.tar.gz ln -s /usr/sbin/apxs /usr/sbin/apxs2 tar zxf mod_spamhaus*.tar.gz cd mod_spamhaus make make install touch /etc/httpd/mod_spamhaus.wl LoadModule spamhaus_module /usr/lib/httpd/modules/mod_spamhaus.sowas automatically added to httpd.conf vi /etc/httpd/conf/httpd.conf {IfModule mod_spamhaus.c}MS_METHODS POST,PUT,OPTIONS,CONNECTMS_WhiteList… Read more »