Yes!
When properly installed, trimMail Inbox will prevent malicious senders from using your SMTP mail server as an open relay.
We back this pledge with our exclusive 200% No Relay Guarantee for trimMail Inbox: dymeta will refund twice the purchase price to the first owner of a properly configured trimMail Inbox that relays an email message from a non-authorized external sender through the trimMail Inbox to a recipient in an unlisted external domain.
To find the relay status of your server, select it from the list below. If your server isn't on the list, please send us its name, and we'll add it to our database.