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Why e-mails from your domain land in spam, and how to fix it. We explain SPF, DKIM, DMARC and MX records in plain words, with example DNS entries. Articles show common mistakes such as too many SPF lookups, missing DKIM selectors or a DMARC policy that is never enforced. Each guide ends with the exact records to add or change. We also cover how to protect your domain from people sending e-mail in your name. Good e-mail authentication makes invoices, offers and password resets reach the inbox.
2026/08/09 · 8分で読めますGmail and Yahoo Bulk Sender Requirements: A Practical Guide
What Gmail, Yahoo and Outlook.com require from bulk senders: SPF, DKIM, DMARC, alignment, one-click unsubscribe and spam-rate limits, with a checklist.
2026/08/08 · 8分で読めますSPF Too Many DNS Lookups: How to Fix the 10-Lookup Limit
An SPF record that needs more than ten DNS lookups fails with a permerror. Learn how to count lookups, what to remove and when…
2026/08/06 · 7分で読めますWhy Are My Emails Going to Spam? 12 Causes and Fixes
Business e-mails landing in spam? Work through the twelve most common causes, from missing DMARC to cold lists, and learn how to confirm each…
2026/08/05 · 8分で読めますSPF vs DKIM vs DMARC: What Each One Does and Why You Need All
SPF, DKIM and DMARC solve different parts of e-mail trust. See what each checks, how they work together and in which order to set…
2026/08/04 · 8分で読めますDMARC Explained: Policies, Alignment and a Safe Rollout
DMARC tells receivers what to do with mail that fails authentication for your domain. Learn the record tags, alignment rules and a safe path…
2026/08/03 · 8分で読めますWhat Is DKIM and How to Set It Up for Your Domain
DKIM signs every message so receivers can trust it came from your domain. Learn how it works, how to set it up for each…
2026/08/01 · 8分で読めますSPF Record Explained: What It Does and How to Set It Up
Learn what an SPF record is, how receiving servers check it, how to write one for every service that sends your mail, and the…