Firewall & Abuse Radar

CIDR blacklist/whitelist, timed bans, sender blocking, hit counters and transparent log archive for abuse operations.

Network-level abuse control

The firewall module applies IP and sender-based policies at the SMTP connection layer. CIDR blacklist and whitelist support enables flexible rules from single IPs to /24 blocks. Abuse Radar monitors suspicious traffic patterns and enables rapid response when needed.

Ban options

Permanent ban
Timed bans: 1 day, 48 hours, 1 week, 1 month
Sender blacklist — envelope-from or header-from based
Whitelist to protect trusted sources

Operational visibility

Blacklist hit counters, last hit time and last hit IP enable transparent abuse operations. Firewall logs are archived and quick sender blocks can be made from NOC screens. Emergency Outbound Lockdown can temporarily halt all outbound traffic during sudden outbound spam waves.

Highlights

✓ CIDR blacklist / whitelist
✓ Timed ban (perm, 1d, 48h, 1w, 1mo)
✓ Blacklist hit counters & last hit IP
✓ Edit record & convert to permanent
✓ Sender blacklist
✓ Manual country blocking
✓ IP reputation observation layer
✓ Firewall log archive

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Operations Principles

⚠Emergency Outbound Lockdown support
⚠Quick sender block from NOC
⚠Ban durations are configurable