← Email Infrastructure Comparisons 2027 Core Architecture • Domain Publishing vs Resolving Pipeline Authoritative vs Recursive DNS for Email: 2027 Sender Identity vs High-Throughput MTA Resolution Published by Fred Dawson • Senior Deliverability Systems Architect • 19 min read To non-specialists, the Domain Name System is often viewed as a singular utility. In reality, email […]
← Email Infrastructure Comparisons 2027 Routing Architecture • Global Nameserver Topologies Anycast DNS vs Unicast DNS for Email: 2027 Global Latency, DDoS Resilience & MX Resolution Published by Fred Dawson • Senior Deliverability Systems Architect • 18 min read The fundamental routing protocol behind your domain’s authoritative nameservers determines how quickly destination Mail Transfer Agents […]
← Email Infrastructure Comparisons 2027 Resolver Benchmark • Local Caching on MTA Nodes Unbound vs CoreDNS: 2027 Local Caching Resolvers, DNSBL Query Rates & Latency Optimization Published by Fred Dawson • Senior Deliverability Systems Architect • 17 min read High-throughput Mail Transfer Agents (PowerMTA, Postfix, KumoMTA) execute between 30 and 50 separate DNS queries for […]
← Email Infrastructure Comparisons 2027 Nameserver Architecture • Self-Hosted Authoritative DNS BIND 9 vs PowerDNS: 2027 Zone Files vs SQL Database Backends for High-Volume MTAs Published by Fred Dawson • Senior Deliverability Systems Architect • 18 min read When managing sovereign, high-volume email infrastructure across hundreds or thousands of sending domains, relying on public cloud […]
← Email Infrastructure Comparisons 2027 Authoritative DNS Benchmark • Cloud Anycast Networks Cloudflare DNS vs Amazon Route 53 for Email: 2027 Propagation Speed, DNSSEC & API Automation Published by Fred Dawson • Senior Deliverability Systems Architect • 19 min read Email deliverability depends on authoritative DNS performance. When destination Mail Transfer Agents (Gmail, Microsoft 365, […]
← Email Infrastructure Comparisons 2027 Cloud Security Gateway Benchmark • Fortune 500 Defense Mimecast vs Proofpoint Enterprise: 2027 Cloud Security Gateways, BEC Defense & Human Risk Architecture Published by Fred Dawson • Senior Deliverability Systems Architect • 20 min read As enterprise email migrations to Microsoft 365 and Google Workspace have consolidated global business communication […]
← Email Infrastructure Comparisons 2027 Carrier-Grade Security • Enterprise Gateway Showdown Cisco Secure Email vs FortiMail: 2027 Carrier-Grade Gateways, Talos Intelligence & Security Fabric Published by Fred Dawson • Senior Deliverability Systems Architect • 19 min read In high-throughput enterprise datacenters and tier-1 ISP networks, generic virtual appliances fail to handle concurrent TCP connection volumes […]
← Email Infrastructure Comparisons 2027 Postfix Pipeline Benchmark • Mail Filtering Architecture MailScanner vs Amavisd-new: 2027 Queue Spool Directory Inspection vs In-Band SMTP/LMTP Filtering Published by Fred Dawson • Senior Deliverability Systems Architect • 17 min read When integrating virus and spam scanning into Unix MTAs like Postfix or Sendmail, system architects must choose between […]
← Email Infrastructure Comparisons 2027 Security Gateway Benchmark • Inbound & Outbound Defense Proxmox Mail Gateway vs Barracuda: 2027 Open-Source Enterprise Cluster vs Commercial Appliance Published by Fred Dawson • Senior Deliverability Systems Architect • 18 min read Deploying an enterprise mail security gateway before email reaches downstream mailboxes (Microsoft 365, Google Workspace, or on-premise […]
← Email Infrastructure Comparisons 2027 Antispam Benchmark • In-Line Milter Engines Rspamd vs SpamAssassin: 2027 Event-Driven C/Lua Engine vs Legacy Perl Milter Architecture Published by Fred Dawson • Senior Deliverability Systems Architect • 19 min read For over two decades, Apache SpamAssassin has served as the de facto open-source standard for mail filtering. However, as […]