I have servers named like server.prod.example.com, and I regularly log into them as server.prod. Recently, these hostnames started resolving to 127.0.53.53. It turns out that ICANN recently enabled ...
.com,.us are TLD,top level domain, and co.uk are SLD,second level domain. Are there "third level domain, fourth level domain" and so on? How many different TLDs and SLDs are out there?
It appears that ICANN is allowing the creation of top level domains. Instead of 'registering' a domain, you would essentially be signing up to be a registrar (you'd be giving out registrations on ...
Is it possible to change the message-id in postfix? If I send Mails over an Java-Application I get the following message-id: ...