I even had it on my CV for my last 2 jobs as a conny.
"No knowledge what's so ever about exchange server, any mention of it by references is a complete lie"
It was asked about in interview. Only thing was the last job I ended up in for years outlasting quite a few perms. And I did end up having to fix the bloody thing though when the raid went tits up and the ickle button clickers managed to screw up pressing a button waiting for a light to stop flashing and going green. Then pulling a drive pressing another button pressing the button again and then leaving it completely alone until its happy.
That was 18 hours billable.
Thankfully the sparc2 with 1Gb of ram and a 500mb local disk was configurable in 10 seconds with a pre-prepared script to take the load and only 6 hours worth had been lost. Which I sorted for the next time by buffering 24hours to the exchange server in the future. It did happen again after I had left.
When met up with mates from that contract 4 years later they had dumped exchange. And apparently my sparc2 was still going strong. With its lead weighted keyboard, laser mouse on a mirror grid. Those Keyboards were something else you could bang nails into walls with them. It might even be still working 14 years on as I had soldered in a paper clip instead of the slow blow fuse in the power pack.