Andrey Mikhalchuk's Blog

The AdSense-Deluxe plugin is just wonderful! I used Adsense Manager before and didn’t like the fact it uses old code for Google Adsense and I can do nothing about that. AdSense-Deluxe is way simpler and allows you to modify the actual code – very smart move. Unfortunately after installation it…

I started republishing posts from my old website about immigration to Australia. First few posts are available here, more are coming later. All posts are in Russian. All posts are not published on the first page.

For debugging purposes I frequently need to quickly convert ip addresses from one representation to another. Here is quick and dirty (I’ll cleanup the interface when get some free time) converter that does the job.
If you don’t see the form below because of some reason please proceed to this page.
The…

When I used NFS first time 15 years ago on Sun it seemed to me the top of progress. And it really was at that time. So dealing mostly with samba during last few years I forgot how actually NFS works until a few days ago when I issued standard…

Recently I’ve got $10 charge from company called “Reservation Rewards” …
I’ve seen this company before in one of those “Use your chance to get $20” with really long explanation that hides the fact you have to subscribe to “Reservation rewards” for $12/month in order to get those $20. But I…

I recently uploaded a sitemap for a new website to google and It looks like google webmaster tools do not accept sitemap containing just single url. The error it reports is “Missing XML tag”.

When you need to implement a DNS master/slave relationship, you obviously can go ahead and edit named config files, but when you do next change to DNS configuration using Plesk most your changes will be lost. From the other side Plesk doesn’t provide slave server configuration…

Sometimes, for security reasons, it is useful to disable pop3 protocol on a server, leaving users with necessity of using secure pop3 protocol (i.e. in outlook they will have to check “Use SSL checkbox”, otherwise mail just won’t work). The civilized method is of course just ask people politely to…

When your mail is not working it is important to know exactly what part is broken (so you know if you should go blame sysadmin or just check your mail client settings). Let’s simulate basic POP3 client using regular telnet (enter commands without quotes) in order to check if the…

“553 sorry, that domain isn’t in my list of allowed rcpthosts; no valid cert for gatewaying”
There could be many things leading to the problem. One of them is client inability to authorize to SMTP server. Here’s a quick explanation of what happens and how the problem could be solved.

Despite the process of obtaining an SSL certificate for your website is not very difficult it may take you plenty of time, because the price of mistake could be rather high. I’d say you can loose hundreds of dollars if you buy wrong type of certificate or get it from…