Short answer
FirstNet reduces this risk by starting with a safe baseline policy, monitoring results and continuously tuning allow and block rules to cut false positives. Clear quarantine and release workflows let users and administrators recover legitimate messages quickly.
In detail
How the switch-over is managed:
- A technical workshop confirms MX records, connectors, identity and mail flow before anything changes
- FirstNet documents a cutover plan and baseline policies
- MX cutover can be phased, followed by mail-flow validation
- A hyper-care tuning window after cutover catches false positives early
- The service then moves to live support through Rapid Response
Ongoing tuning is part of the managed service rather than a one-off setup task, so policies keep adjusting as your mail flow and threat patterns change. FirstNet also manages quarantine and release workflows and investigates suspicious campaigns.
If a legitimate message is held, a user or administrator can release it, and FirstNet adjusts the rules so the same sender is handled correctly in future. Telling FirstNet about critical senders, such as key suppliers or payment platforms, during onboarding helps the baseline policy start in the right place.
Source: FirstNet Email Security & Threat Protection service page →
Didn’t answer your question?