Going back into the account I see the "Undeliverable" bounces, but these were not emails I sent and have no record of them in my sent box. I am currently changing the passwords but would you have any other security recomendations so I can prevent this in the future?
This account was suspended for inactivity but when trying to renew with the refresh script I get: "We're sorry, but we either could not find that account in the database, or it is not listed as inactive. Please contact an administrator if you feel this message is in error."