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Outbound abuse control — Emergency Lockdown, rate limits and Abuse Radar

Pitbull Secure Gateway outbound protection layer: per-tenant/domain quotas, anomaly detection, Emergency Outbound Lockdown, sender blacklist and rapid NOC intervention. SMTP Abuse Radar runs observe-only by default.

Outbound Filtering Abuse Radar
Tenant: acme.com İZOLE
Send rate 847/dk
RBL status TEMİZ
Lockdown HAZIR
Lockdown Abuse Radar Firewall Rate Limit
Lockdown
Emergency mode
Observe
Abuse Radar
Multi
Tenant quota
24/7
NOC visibility

Cost of outbound compromise

One tenant's abuse destroys shared IP reputation; intervention is delayed without centralized outbound control.

One tenant burns the IP

Outbound abuse from one account lands the shared IP block on RBLs; all customers' delivery is affected for days.

Delayed abuse detection

Without outbound monitoring, abuse waves are noticed only via ISP complaints or RBL listing.

Manual intervention load

Finding and isolating the problematic account can take hours; thousands of spam emails may leave in that time.

Missing per-tenant visibility

Knowing how much each customer sends is hard; quotas and policy enforcement become impossible.

Outbound protection layer

Outbound Filtering is Pitbull Secure Gateway's outbound SMTP traffic control module. Security Engine outbound policy, NOC visibility and Firewall & Abuse Radar work together to detect abuse waves at the source.

Rate limit & quotas

  • Per-tenant and domain outbound rate limits and daily limits
  • Correct policy scope via relay IP / customer synchronization
  • Abnormal send rate and abuse pattern detection

Emergency Outbound Lockdown

Halt all outbound traffic temporarily during spam waves with timed outbound lockdown warnings. Quick outbound sender block from NOC and sender blacklist activation. Automatic intervention activates only with explicit policy.

SMTP Abuse Radar & Firewall

  • Abuse Radar observe-only by default — suspicious patterns are monitored
  • GeoIP / Country / ASN visibility and manual country blocking
  • CIDR blacklist/whitelist and timed firewall bans
  • Blacklist hit counters, last hit time and IP visibility

Operational visibility

Monitor daily outbound traffic, reject reasons and delivery statistics from the NOC dashboard. Define Telegram, email and webhook alerts via the Alert Policy Engine.

How it works

  1. 1 Route outbound traffic through Pitbull Secure Gateway relay.
  2. 2 Define per-tenant and domain outbound rate limits.
  3. 3 Configure Emergency Outbound Lockdown policy.
  4. 4 Set SMTP Abuse Radar thresholds in observe-only mode.
  5. 5 Monitor outbound traffic and sender blocks from the NOC panel.