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Blocklists & Spam Monitoring

ZapBL: Email Blocklist Removal Guide

Alaa 15 July 2026

Independent DNSBL listing spam sources and open relays. Used by a subset of mail server operators and SpamAssassin configurations.

Blocklists & Spam Monitoring

FABELSOURCES: Email Blocklist Removal Guide

Alaa 15 July 2026

Dutch DNSBL that was part of the FabelSources anti-spam project. Discontinued. No longer operational.

Reputation & IP Warming

Google Postmaster Tools in 2026: v2 Dashboards, Compliance Status, and Deliverability Analysis

SMTPedia's Editorial Team 28 July 2026

Google Postmaster Tools 2026 guide covering the v2 dashboard, the June 2026 Deliverability Analysis section (seven verdicts plus REASON_UNSPECIFIED), the API v2 GA of February 2026 (queryDomainStats, ...