One of the problems with our old central mail system is that it was a black-box mailer configuration ; the valid localaddresses and domains were defined by what the mailer accepted, and whatthe mailer accepted was more or less in code, not in handy configurationfiles. This presented an obvious problem for the evolution of our mailsystem .

So our first job was to reverse engineer what addresses the centralmailer accepted, and figure out how to turn these into reusableinformation for the new mail machines we wanted tobuild

Here is something I've noticed lately: when I want to look for tracesof some recent or just-breaking piece of news, such as IPSCa's utterfailure or important potential Solaris licensingchanges , I no longer bothertrying Google or other general search engines; instead, I go to Twitterand search there. And it works. There's a certain amount of noise in theresult but also a lot of signal, more than I could easily get otherwise.

Partly I think that this is because