I found my email by doing what you said, then I went to Email Accounts under the Mail section, created an email account with the email I found, making a password for it. That brought me to Webmail which is also located under the Mail section, chose 'Go to Secure Webmail Login'. Logged into it with the email and password created, chose from the 3 webmail softwares. I chose 'roundcube' because it worked and was more web friendly. Clicked the settings at the top right, went to identities which is located on the left under settings. Clicked the plus at the bottom to make an account there, typed my email and placed the Username it's under, checked 'set as default' and saved. Then I went to the other email that was there somehow and unchecked 'set as default, saved. Then I went to my domain, clicked 'forgot my password' and entered my email. Sped to roundcube, checked my inbox and finally reset my password.