500 Internal Server Error

[lpowers]

I am unable to solve the error problem.  I need to get into my email but the message says:  Internal Server Error
500

The system user _______ has exceeded its allotted quota of disk blocks.
What do I do?  This account was set up years before I was hired. No one seems to know who the administrator is??

[SKaero]

Who do you pay for website/email hosting? They would be the party you need to contact.