Someone is threatening and harrassing my daughter

[alexa]

Dear LEO,

My daughter met a boy 2 years ago on a family vacation at a foreign resort. At that time my daughter was 17, the boy 18. The boy is is living in the Netherlands with his parents. They fall in love and they had a relationship through phone calls and emails for about 1 year, the boy visited us twice, once with his parents. My daughter visited them once. However after a year my daughter broke up. The boy couldn't accept it and he started spying on her, hacked her emails, Facebook. Finally the boy was sent to a psychiatric hospital because he was diagnosed with Post Traumatic Disorder. Since November 2009 he is in and out of the hospital. He is demanding that my daughter should contact him. My daughter has changed her email address, Facebook accounts twice since then but he still finds a way to send her emails. The emails are coming in his name and from some friends name, we don't know if they are real friends or he made up the email addresses.
He states that my daughter sends her messages in what she urges him to commit suicide. He states that she has to suffer because she put him into this situation, she is responsible for all the bad that has happended to him. And I have to suffer too because I advised my daughter to cheat on him. I tried to put these emails into the spam folder and put restrictions on the sender - no use, they come again and again . I forwarded some of the emails to his father, but he has never replied to me. I know that the boy has hacked his father's emails too, he wrote me once in his father's and mother's name, even in the treating psychiatrist's name but I recognized his writing style.
I'm seriously worried that he will come over to the US (takes only a flight ticket) and do some harm to my daughter.
Is there any way we can get rid of these messages? I would appreciate any advice.
Alexa

[GoDirectly2Jail]

Um, this is a law enforcement forum, not a computer help desk. I suggest you contact an IT professional if you need assistance with email, spam folders, and computer-related messages.

There is no crime being committed. Sorry you joined the forums here in error. Good luck.

[Legoate]

Well you could filter and delete every letter from the Netherlands... You could also not read any emails from people you don't know, or that you believe may be related to him. You could also refuse to respond in any manner to him.

If you continue to put up public facebook/myspace pages, people will continue to find them.

This is really a common sense issue.

[Piggy]

The chances of law enforcement getting involved in this one are slim to none. There are so many hoops and hurdles when dealing with another country. Unless you're dealing with a murder investigation or other major crime, there are very few international agreements. Something of this nature would be a misdemeanor at best. Your best bet is to have her shut her computer down.

[Samuel]

Well you could filter and delete every letter from the Netherlands... You could also not read any emails from people you don't know, or that you believe may be related to him. You could also refuse to respond in any manner to him.

If you continue to put up public facebook/myspace pages, people will continue to find them.

This is really a common sense issue.

Quoted for emphasis.