[isostatic]

I wonder how it would cope with Scunthorpe

[jamhan]

Or your name is "Olivia Gray". (True story, corporate mail filter blocked all that person's email)

[nailer]

Why? 50 Shades? Something else?

[ConroyBumpus]

Remove the space from her name and then look for a word in the middle that is commonly associated with spam emails.

[mcbain]

For anyone unaware: https://en.wikipedia.org/wiki/Scunthorpe_problem