I have a significant problem where someone is using my email address as the sender of an enormous quantity of spam emails. I believe this is called "spoofing". It becomes a problem for me when the addressee's email address is invalid in which case the email gets bounced back to me. Zoho has a limit of 10 bounced emails before my email account gets locked for outgoing emails. Unlocking the account is time consuming but achievable.
I'm looking for strategies for defeating this email address spoofing. My first thought is to temporarily change the email address. Hopefully when the spoofer realizes their emails are being rejected that they'll move on to some other unwitting email address.
Will the spoofer immediately know that the email address they've been spoofing is no longer valid?
In the Zoho Control Panel/User Details/Mail Accounts, will disabling the Outgoing have the same effect as changing the email address?
In the Zoho Control Panel/User Details/Allowed IPs, would including a range of trusted IPs block the spoofer?
Any other ideas for handling this situation would be most appreciated. Thanks.