We are writing from Namecheap Legal and Abuse team.
It has come to our attention that there is a high number of similar emails sent by the hosting account with the username "rondamo2018".
As a result of your account activity, the IP address of our server was blacklisted and the whole server functionality was affected.
In order to prevent hacking activity and abuse, we have changed the password for the involved email account.
Please note that in case the issue reoccurs, we may be forced to suspend the subject account to stop the outbreak.
Thank you for understanding. Please let us know if you have any questions.