MIMEDefang 3.7.1

Email Authentication & Standards

• MTA-STS and DANE/TLSA policy checks, outbound connections now honor published transport security policies
• BIMI support, verify Brand Indicators for Message Identification for logo-based sender authentication

Performance & Scalability

• Mail::MIMEDefang::Async module, run multiple filtering tasks in parallel to reduce latency on complex filter chains
• Worker autoscaling, workers can be automatically activated or deactivated based on current load

ClamAV

• TCP/IP scanning on localhost, removes the Unix socket requirement, simplifying containerized deployments