148 GLOSSARY
TLS Transport Layer Security. A protocol for encrypting and providing data
integrity over the Internet.
Traceroute A utility used to verify the routing path from one network host to
another.
Trusted Senders List A list of users who can bypass email security controls when mailing
local users.
Virtual Mapping Redirects email for a specified email address to another one without
modifying the To: or From: headers of the email.
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