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BNবাংলা#Email Authentication
Email authentication is the set of DNS-based standards that prove a message really comes from the domain it claims. The core trio is SPF, DKIM and DMARC, supported by related standards such as BIMI, MTA-STS and reverse DNS. Mailbox providers use authentication results as one of the first signals when they decide whether to trust a message. Without it, legitimate mail is more likely to be filtered and criminals can impersonate the domain more easily. The articles under this tag explain how the standards fit together and how to check them.
27 thg 8, 2026 · 8 phút đọcEmail Forwarding and Authentication: SPF, SRS and ARC Explained
Forwarded e-mail often fails SPF and sometimes DMARC. Learn why forwarding breaks authentication and how DKIM, SRS and ARC keep forwarded mail deliverable.
21 thg 8, 2026 · 8 phút đọcMTA-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 thg 8, 2026 · 8 phút đọcBIMI 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.
16 thg 8, 2026 · 8 phút đọcEmail 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 thg 8, 2026 · 8 phút đọcMicrosoft 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 thg 8, 2026 · 8 phút đọcGoogle 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…
10 thg 8, 2026 · 8 phút đọcHow 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…
8 thg 8, 2026 · 8 phút đọcSPF 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…
5 thg 8, 2026 · 8 phút đọcSPF 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…
4 thg 8, 2026 · 8 phút đọcDMARC 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…
3 thg 8, 2026 · 8 phút đọcWhat 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…
1 thg 8, 2026 · 8 phút đọcSPF 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…