SPAMfighter Domino Module: Troubleshooting Common Issues

SPAMfighter Domino Module: Complete Setup Guide for Administrators

Overview

This guide walks administrators through planning, installation, configuration, and verification for SPAMfighter Domino Module on an IBM/HCL Domino mail environment. It assumes Domino 9.0.x or later and that you have administrator access to Domino servers and Windows machines used for the SPAMfighter components.

Before you begin

• Requirements
  • Domino server (9.0.x+ recommended).
  • Windows server for SPAMfighter components (Windows Server 2012 R2 or later).
  • Administrator credentials for Domino and Windows.
  • Active Internet connection for updates and spam signature downloads.
  • Valid SPAMfighter license or trial key.
• Backups
  • Backup Domino Directory (names.nsf) and server mail.box/mail.box.ndk.
  • Snapshot or backup of Windows server system state and any existing mail processing appliances.
• Network & Ports
  • Ensure outbound access to SPAMfighter update servers (HTTP/HTTPS).
  • Open necessary ports between Domino and the Windows server (SMTP port 25 or custom).

Architecture & Deployment Options

• Gateway mode: SPAMfighter sits as an SMTP gateway in front of Domino (recommended for centralized filtering).
• Server plugin mode: Installed on Domino server, integrates directly into Domino mail flow.
• Hybrid: Gateway for inbound filtering + plugin for additional server-side processing.

Choose based on scale, redundancy, and administrative preferences. Gateway mode reduces direct changes to Domino mail routing; plugin mode can be simpler for small environments.

Installation (Gateway mode)

1. Provision a Windows server: join domain, install updates, set static IP.
2. Download the latest SPAMfighter Mail Gateway installer from your SPAMfighter account.
3. Run the installer as Administrator; accept defaults unless your environment requires custom paths.
4. Enter license key when prompted; configure automatic updates.
5. Configure SMTP listener:
   • Set incoming SMTP on port 25 (or other agreed port).
   • Point DNS/MX records or smart host settings so inbound mail routes to the SPAMfighter gateway.
6. Configure relay to Domino:
   • In SPAMfighter, set the destination SMTP host to your Domino server’s IP/hostname and port.
   • If using TLS between gateway and Domino, configure certificates accordingly.

Installation (Domino plugin mode)

1. Obtain the SPAMfighter Domino Module package for Domino servers.
2. Stop Domino server mail routing or place server in maintenance mode.
3. Copy the plugin files to the Domino server’s program directory or as instructed by SPAMfighter documentation.
4. Run the installer/agent setup on the Domino server as Administrator.
5. Edit server configuration (server document, or local config file) to enable the plugin and set filtering options.
6. Restart Domino services to load the plugin.

Configuration — Spam Policies & Whitelists

• Global policies: Define actions for detected spam (Quarantine, Tag Subject, Reject).
• Quarantine: Decide retention period and notification style. Configure administrator quarantine access.
• Whitelists/Blacklists: Import trusted senders from Domino Directory and create team-level exceptions.
• Inbound/Outbound Rules: Define rules for internal senders, bulk mail, and attachment handling.
• Greylisting & Rate limiting: Enable to reduce spam bursts; tune thresholds to avoid false positives.

Integration with Domino Directory & LDAP

• Configure SPAMfighter to sync with Domino Directory (LDAP) to use group membership and user-level whitelists.
• Map Domino attributes (mail, cn) as required for correct user identification.
• Schedule regular syncs (e.g., nightly) and test user lookups.

TLS/Certificates

• If using TLS between gateway and Domino, install trusted certificates on both sides.
• Ensure Domino server accepts TLS from the gateway. Update connection documents if necessary.

User Notifications & End-User Quarantine

• Decide whether users receive daily quarantine digests or access a web portal.
• Configure authentication for the web portal (LDAP against Domino Directory or local accounts).
• Provide end-user instructions for digest emails and false-positive reporting.

Monitoring & Logging

• Enable verbose logging during initial rollout; reduce level for steady-state.
• Monitor:
  • Spam detection rate and false-positive reports.
  • Queue lengths and SMTP throughput.
  • Update status for spam signatures.
• Configure alerts for service failures, update errors, or high quarantine volumes.

Testing Checklist

1. Send known-good and known-spam samples to verify actions (tag, quarantine, reject).
2. Test mail flow: external → SPAMfighter → Domino → user.
3. Test TLS and certificate trust chain.
4. Verify directory sync and that user quarantine digests match expectations.
5. Test failover if you have multiple gateways.

Troubleshooting Common Issues

• Mail not delivered: check MX records, gateway SMTP listener, and relay settings to Domino.
• High false positives: loosen sensitivity, add domain-level whitelists, review content rules.
• Directory sync failures: verify LDAP connectivity, credentials, and attribute mappings.
• TLS handshake errors: verify cert trust chain and matching hostnames.
• Service crashes: check Windows Event Log and SPAMfighter logs; update to latest build.

Maintenance & Updates

• Enable automatic signature updates; verify daily.
• Schedule monthly review of policies and quarantines.
• Patch Windows server and SPAMfighter software per vendor advisories.
• Keep a test mailbox for validating updates before broad rollout.

Rollback Plan

• Keep Domino routing pointed to original MX or have a secondary MX to accept mail if gateway fails.
• Backup configuration files and license keys before changes.
• For plugin installations, retain a clean Domino server backup to restore quickly.

Final verification

• After 72 hours of production traffic, review spam statistics and user feedback.
• Adjust sensitivity and whitelists to reduce false positives below an acceptable threshold (target <0.5%).
• Document the final configuration and update runbooks for on-call staff.

If you want, I can produce a printer-friendly checklist, step-by-step command examples for Domino/Windows, or a sample quarantine digest template.