SpamTitan Knowledge Base

Solutions

• Are you getting too much spam?
• Experiencing Delays with Greylisting?
• 'application/octet-stream' Mime Type Incorrectly Blocking Attachments
• Bypassing Banned Attachments & Antivirus Tests from a Specific Sender
• Calculating SpamTitan License Usage

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Documentation

• SpamTitan Cloud
• SpamTitan Gateway Admin Guide
• Getting Started with SpamTitan Private Cloud
• SpamTitan API Docs
• Prevent Google Mail from Applying SPF/DMARC rules using Inbound Gateway

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Announcements

• [✓] Service Status 18/08/2026 – us2-smtp-ui UI Access Issue Fully Resolved
• Office365 intermittent deferred messages with: "450 4.7.9 Application queue quota exceeded"
• Introduction of new ArcTitan Admin UI and OAuth 2.0 from 29 June
• SpamTitan Gateway / Private Cloud sending all message through Sandboxing -- 2006/04/06
• EncryptTitan Outbound IP 34.237.18.131 was listed on SpamHaus from 14:45 - 16:45 (March 31, 2026)

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SpamTitan Skellig (9.00)

• SpamTitan Skellig Overview
• MSP Setup: Skellig
• Customer Setup: Skellig
• Security Settings: Skellig
• Enforced Two-Factor Authentication

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Getting Started: SpamTitan Cloud (SaaS)

• SpamTitan Cloud Setup
• Step 1: Log in for the first time
• Step 2: Add Your Domain(s)
• Step 3: Test Connectivity to your Mail Server
• Step 4: Enable Quarantine Reports

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Getting Started: SpamTitan Private Cloud (DCI)

• Getting Started with SpamTitan Private Cloud
• SpamTitan and Office 365 IP Throttling (Rate Limits)
• Ensuring Your Email is Not Marked as Spam in Office 365
• Locking Down Your Office 365 Mail Server

Link Lock

• Link Lock
• Enabling Link Lock in SpamTitan
• Enable Link Lock for a Domain
• Enable Link Lock for a User
• Link Lock Allowed URLs

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Glossary

• A-record
• Active Directory (AD)
• AWS
• Bayesian Spam Filtering
• Catch rate

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SSL Certificates

• SSL Certificates in SpamTitan Gateway
• Generating Certificate Signing Requests
• Importing a Signed Certificate

Useful Info

• SpamTitan Cloud Server IP Addresses
• What is Recipient Verification?
• Firewall Ports Required by SpamTitan
• Guidelines for Updating SpamTitan
• Establishing a Support Connection

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Settings: SpamTitan Cloud (SaaS)

• Changing your SpamTitan Password
• Two-Factor Authentication
• Web Authentication Settings
• Test Authentication Settings
• Mail Relay Settings

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Quarantine (DCI)

• Quarantine
• Managing Quarantine Email
• Filtering Quarantine
• Quarantine Report Settings
• Advanced Quarantine Report Settings

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