open relay - An SMTP e-mail server that lets third-parties relay e-mail messages. This opens the door for spammers to use your network as a spam factory. All too often, this leads to crashing servers and getting your email blacklisted. That's bad for business. trimMail Inbox prevents spammers from using your Microsoft Exchange or other e-mail server as an open relay.
When properly installed, trimMail Inbox will prevent malicious senders from using your mail server as an open relay.
We back this pledge with our exclusive 200% No Relay Guarantee for trimMail Inbox.
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