Rather you than me working with Exchange et al.
Good luck with the interview
Exchange is actually quite a good email system, and 2007 in particular has some fantastic tools. It truely does tell you what is wrong when it doesn't work now. Mega reliable, but now (with 2007) less suitable for small workgroup servers due to resource requirements (as with most current integrated communications systems). Does now scale up much better.
For a typical corporate mail system, its hard to beat, and hence why market leader in this market.
Exchange does have the whole collaboration etc thing pretty well sewn up, but as a pure e-mail server I hate it. It's typical MS-esque in that it takes a long-established protocol but does it in its own way, meaning it only really works well with Outlook (well in the world of MS there is only one e-mail client in the world...). Its IMAP support is rather crap, and it has an uncanny ability to screw up the plain text portion of e-mails... yet another example of the philosophy of "everything is a web page" that MS adopted in the mid 90s after missing the boat that is the internet.
Never tried Exchange 2007.... not sure if we have it available via MSDN. I'd expect so but I haven't checked the list for a while.
Incidentally I can get both SQL Server and Oracle for free (non-commercial use obviously), but I can't really be bothered! I have Postgres running on my server box at home which does very little (stores my music database info via Amarok to make it accessible to web-enabled apps etc, and some other very minor things, way overkill really).
Yup, Exchange aimed at business use, so POP3/IMAP is unsuitable. Both POP3 and IMAP work OK on Exchange, but for pure 'isp' type email, Exchange is too expensive. OWA is really the only reason to use Exchange in a reseller type environment, as most webmail systems, inc Squirellmail that we use at OOF, are poor by comparison.
SQL Server Express is free, and more than adequate for small scale stuff. Lacks big database support, and any useful replication options, otherwise the same as real SQL Server. And can be used commercially
Nought wrong with overkill. Never played much with postgresql, always seem to go down the mysql route on linux.