By default, sender addresses shown on the End User Quarantine console and in the quarantine digest email messages are envelope addresses. Hosted Email Security is capable of displaying both the envelope addresses and the message header addresses if configured.
On the End User Quarantine Console Settings screen, choose from the following options:
Message header addresses
If Both is selected, each envelope address is followed by the corresponding message header address in parentheses, for example, firstname.lastname@example.org (email@example.com).