Monthly Archives: August 2011

Strange DNS queries when Google Chrom(ium) is running

I noticed something strange lately, when Google Chrom(ium) 12.0.742.112 (90304) on my up-to-date Ubuntu 11.04 is running, it sends in 10 seconds interval always DNS queries out similar to these: 09:28:54.892711 IP linux.home.lan.52626 > ipv4gw.home.lan.domain: 55443+ AAAA? (32) 09:28:54.899660 IP linux.home.lan.33455 > ipv4gw.home.lan.domain: 13122+ PTR? (42) 09:28:54.900955 IP […]

How do I test my IPv6 capable mailserver?

Just a quick tip: You have Postfix running and want to enable IPv6 for your email as well? After quite some playing around I finally got it right: inet_interfaces =,, 2a01:348:6:315::2, ::1 inet_protocols = ipv4, ipv6 This makes Postfix listen only where you actually need it to – […]

Nginx, PHP-FPM and APC – and your server will love you

I have to admit, I really loved Apache with ModSecurity (with the CoreRuleSet), it gave me “peace at night”. But then I noticed that this actually eats quite a lots of memory… and as a heavy TinyTinyRSS user I noticed that TTRSSĀ  is sometimes quite sluggish loading articles. So I […]