How pathetic is this?

Being a Masters of Computer Science, I always tend to think outside the box.

Here’s an example:

A user at my company was never able to send e-mails to Xxxx@Xxxx.com. I did some reaseach and found out that if I use the e-mail address xxxx@xxxx.com (all small letters), mail goes through. I turned google upside down searching for Exchange 5.5 + lowercase address and all variants of this search… nothing!

Today, that user comes to me and says that a co-worker was able to send email to Xxxx@Xxxx.com. I had to see it to believe it, I sent out a test email from that users computer to Xxxx@Xxxx.com, it went through!

Know what the problem was? The user was using Outlook2K and the co-worker was using OutlookXP.

Will somebody remind me why did I get a Masters degree for this?