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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.
24 ส.ค. 2026 · อ่าน 8 นาทีGoogle Postmaster Tools: How to Set It Up and Read the Data
Google Postmaster Tools shows how Gmail sees your mail: spam rate, authentication and compliance. Learn how to verify your domain and act on the…
22 ส.ค. 2026 · อ่าน 8 นาทีHow to Warm Up a New Email Domain or IP Address Safely
New domains and IP addresses have no sending reputation. Learn how to warm them up gradually, which recipients to start with and which signals…
21 ส.ค. 2026 · อ่าน 8 นาทีMTA-STS and TLS-RPT: Enforcing Encrypted Email Delivery
MTA-STS makes other servers deliver your incoming mail only over verified TLS, and TLS-RPT reports failures. Learn how both work and how to set…
20 ส.ค. 2026 · อ่าน 8 นาทีBIMI Explained: How to Show Your Logo in Recipients’ Inboxes
BIMI shows your logo next to authenticated e-mail in supporting inboxes. Learn the requirements, SVG and certificate rules, and whether it is worth it.
19 ส.ค. 2026 · อ่าน 8 นาทีReverse DNS and PTR Records for Email: What You Need to Know
Mail servers without matching reverse DNS are treated as suspicious. Learn what PTR records are, who controls them, and how to check forward-confirmed rDNS.
18 ส.ค. 2026 · อ่าน 8 นาทีWordPress Emails Going to Spam or Not Sending? How to Fix It
WordPress contact form and WooCommerce e-mails often fail or land in spam. Learn why PHP mail is the problem and how to send through…
16 ส.ค. 2026 · อ่าน 8 นาทีEmail Spoofing: How to Stop People Sending Mail as Your Domain
Criminals can send e-mail that looks like it comes from your domain. Learn how spoofing works, which records stop it and what DMARC cannot…
15 ส.ค. 2026 · อ่าน 8 นาทีMicrosoft 365 Email Authentication: SPF, DKIM and DMARC Setup
A practical guide to SPF, DKIM and DMARC for Microsoft 365: the records to publish, how to enable DKIM in the Defender portal and…
14 ส.ค. 2026 · อ่าน 8 นาทีGoogle Workspace SPF, DKIM and DMARC Setup, Step by Step
Set up SPF, DKIM and DMARC correctly for Google Workspace: the exact records, where to enable DKIM signing, and how to confirm everything passes…
13 ส.ค. 2026 · อ่าน 8 นาทีEmail Blocklists: How to Check Your Domain and Get Delisted
Is your mail server or domain on a spam blocklist? Learn how DNS blocklists work, which ones matter, how to check them and how…
11 ส.ค. 2026 · อ่าน 8 นาทีMX Records Explained: How Email Finds Your Mail Server
MX records tell the internet where to deliver mail for your domain. Learn how priorities work, how to check and change them, and the…
10 ส.ค. 2026 · อ่าน 8 นาทีHow to Read DMARC Aggregate Reports Without Getting Lost
DMARC aggregate reports show every server sending mail with your domain. Learn how to read the XML, sort sources into groups and decide what…