I received an email from Microsoft to inform me that there had been suspicious activity on my account for email address admin@permsolutions.co.uk and my account was been used in Taiwan. I independently changed my password not clicking on the link of the email as I was unsure of the authenticity of the email. Since this email I have received over 1000 emails to inform me that there is a message sending failure and return to sender. I have not tried to send an email from this account and suspect someone has the hacked the account. I would like to know how to block and indeed stop these emails coming through.