Exchange 4.5< admin popping in to say hi. The management interface to 2000 was basically the same as 2003 & 2007, it wasn’t until 2010 iirc that the web based interface + everything is cloud doctrine hit.
Where were you when I needed you in the interview? ;-P
I don't remember the year it happened but it could even have been 2001, even 6 months to a year at that time would count as "extensive", I suppose. Can't say I had extensive 5.5 experience at that point either, to be fair.
They were probably concerned about their upgrade path from NT to 2000 and active directory more than just the mail server. I'll never know!
