I've received an error message saying that my account has been blocked from sending e-mails. 

error message "This account is currently blocked from sending messages.  If you don't think you've violated the Windows Live Terms of Use, please contact customer service."

my email address is {removed email address}

please check urgently with thanks in advance

Bo muhammed, I’ve checked your account and found that it was blocked due to a Terms of Use violation.  I regret but I can’t unblock it and I can’t tell why it was blocked.  Some possible reasons for this are unwanted e-mail or spam, abusive or harassing e-mail and phishing or account fraud.