When every email you send is important, hosted email services like Google Apps and Microsoft Exchange are a blessing. Unfortunately it’s not a free blessing – you can count on spending $4-5 per month for each user. This article shows you how to get free, enterprise-level email hosting on your domain name using Outlook.com.
Recently I had a website that was getting hammered with traffic. Every hit on the website requires multiple MySQL SELECT statements. While SELECTs are typically quite fast, the database in question has several million records. Upgrading hardware isn’t an option for this website right now, and disabling the account is far from the best solution. The situation demanded a way to set a hard limit on MySQL requests for an individual user account.
Once in a while you might run into a suspicious IP address accessing your website. Maybe it’s doing something funny like probing for vulnerabilities, or just spamming the heck out of your server. Being a responsible webmaster, you decide to ban the IP address from your server completely – but how? Using Apache Web server it’s easy to ban a single IP address, ban multiple IP addresses or ban an entire IP range using the .htaccess file.
When launching a new website and making a DNS change, it’s not enough to simply hope everything was done correctly. Here’s a simple trick you can use to test DNS changes on a Windows PC before they ever hit your nameserver.