Does one domain per SDR protect the brand?

Limited Protection. Separate domains isolate reputation damage to some degree. But brand association, shared infrastructure, or similar patterns may still connect domains in provider analysis.

Domain separation is a legitimate risk management strategy. But it does not provide complete isolation. Problems can still reflect on brand reputation broadly.

Use separate domains thoughtfully for genuine purpose separation. Do not expect them to firewall bad practices. Good practices should apply across all domains.