Category Archives: DNS
DNS and DNSSEC
Many stories begin with “In the good old days …” but were the old days always so good? In the case of DNS, the old days go back a long way. You can read more about DNS itself at DNS … Continue reading
DNS at the core of the Internet
DNS might not be the oldest, but is for sure one of the oldest and still very important services building the core of the Internet. The domain name service, or DNS for short, is one of the core services of … Continue reading
Migrate Baikal with minimal downtime
Baikal is a CalDAV and CardDAV implementation based on PHP and MySQL. This post will explain how to migrate a Baikal installation from one server to another with minimum downtime. DNS entries can take up to 24 hours to be propagated to all DNS servers around … Continue reading
Migrate WordPress site with minimal downtime
Migrating a Wordpress installation from one server to the other sounds like a simple task. Just move the files, copy the database for Wordpress and lets go. But when you start dealing with the DNS entries the whole story gets tricky. Continue reading
SPF and multiple domain mailserver
We all hate spam, right? I think you all know the annoying emails, but what is worse than receiving emails? How about when emails you send to someone are for some reason detected as spam? This happened to me recently. … Continue reading
