If you use vBulletin forum software, you probably know what a wonderful piece of code it is and type of features, enhancements it offers for you as administrator as well as to your visitor is truly amazing. At some point you would need to debug, fine tune, troubleshoot or fix some problems with vBulletin then… Continue reading Debug and Optimize vBulletin with Config Constants
Category: Blog & Tutorials
Virtualization blog featuring my home virtualization lab, tutorials, network topology and configuration guides in the virtualized environments.
Firewall, NAT and DNS, reverse DNS entries do not match Error
If you host your own email behind a NAT device or firewall, you’ve probably seen this issue come up at least once in your enterprise. Recently, I’ve received some complaints about exchange 2007 bouncing email messages with error messages like this: mxi5p.craigslist.org #554 5.7.1 <unknown[12.12.12.2]>: Client host rejected: rDNS/DNS_validation_failed._Please_setup_matching_DNS_and_rDNS_records: _http://www.craigslist.org/about/help/rdns_failure xabd-4 ## or its other… Continue reading Firewall, NAT and DNS, reverse DNS entries do not match Error
How to configure Backup Exec to purge Exchange email logs?
If you have a busy Exchange email server, your log folder can grow to a humongous size in no time. Recently, our exchange 2007 cluster went from 200 GB free to 2GB free space. In a cluster environment, when you run out of disk space, exchange 2007 server will dismount the databases which means no… Continue reading How to configure Backup Exec to purge Exchange email logs?
How to delete the Hiberfil.sys file?
So, how do you delete the Hiberfil.sys file on Windows 2008 server and/or Windows Vista machine? Our Dell server’s boot partition ran out of disk space, while troubleshooting as to what was taking up so much space, I found that hiberfil.sys file was taking up over 4 GB of space in a 10 GB partition….… Continue reading How to delete the Hiberfil.sys file?
MySQL Backup Script
If you run a website or a forum, you are probably using MySQL as its backend database engine. MySQL is one the most popular open-source applications on the planet and pretty good one as well. Being the best and most popular doesn’t mean free of issues and headaches that come with managing databases… are you… Continue reading MySQL Backup Script
Email Server Generates “#500 Firewall Error##” Error
We upgraded our mail server recently to Microsoft Exchange 2007 and users started experiencing problem sending emails to multiple recipients on same domain. The error message: Diagnostic information for administrators: Generating server: exchange-server.internal.domain.com [email protected] external.mail.server.domain.com #500 Firewall Error ## The error message is pretty clear as to where the problem lies. We do have cisco… Continue reading Email Server Generates “#500 Firewall Error##” Error
Missing or corrupt C_437.NLS file
My laptop today with Windows XP Professional Operating system which had this error message: ‘Windows could not start because the following file is missing or corrupt. \WINDOWS\SYSTEM32\C_437.NLS Here are two solutions: 1. Boot your computer from your Windows installation/repair CD. You may have to hit F12 and choose CD-ROM as the boot option. 2. Once… Continue reading Missing or corrupt C_437.NLS file