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How can I create a valid SPF record format for a domain that uses multiple email providers?

ByBrad Slavin January 29, 2026January 29, 2026 Reading Time: 10 minutes

You can create a valid SPF record for a domain that uses multiple email providers by starting with “v=spf1”, listing your known static sources with ip4:/ip6:/a:/mx:, adding each provider via include: while staying under the 10-DNS-lookup limit, splitting long values into multiple quoted strings to respect TXT-length/UDP-size constraints, ending with an appropriate all qualifier (~all…

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Advanced

What Happens To My Email Deliverability If My SendGrid SPF Record Is Missing Or Misconfigured?

ByBrad Slavin January 28, 2026January 28, 2026 Reading Time: 10 minutes

If your SendGrid SPF record is missing or misconfigured, recipient servers will treat your messages as unauthenticated, causing SPF failures that break DMARC alignment and materially reduce deliverability through higher spam placement, throttling, and outright rejects—especially at Gmail, Microsoft, and Yahoo—until the record is corrected. Modern email deliverability hinges on a three-part authentication chain—SPF, DKIM,…

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Intermediate

SPF Syntax Limits Explained: Includes, Lookups, and the 10-DNS Rule

ByBrad Slavin January 28, 2026January 28, 2026 Reading Time: 8 minutes

Most SPF records do not fail because they are missing or incorrectly added. They fail because they become too complicated over time. A domain starts with one or two email services, then slowly adds marketing platforms, CRMs, billing tools, and support systems. Each new service asks you to add another entry to your SPF record….

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Advanced

What Causes An Email To Be Rejected For Sender Policy Framework After A DNS Change?

ByBrad Slavin January 27, 2026January 27, 2026 Reading Time: 10 minutes

Emails are typically rejected for SPF after a DNS change because receiving servers still reference cached/propagating DNS data, the new SPF record has syntax/publishing errors (TXT vs SPF RR type, duplicate or conflicting records), the update increases DNS lookups beyond SPF’s 10-lookup limit, identity alignment (MAIL FROM/HELO/subdomain) no longer matches, third‑party include domains or senders…

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Intermediate

How Can I Determine Whether I Need An SMTP Relay Service Provider For My Business Emails?

ByBrad Slavin January 23, 2026January 23, 2026 Reading Time: 10 minutes

You need an SMTP relay provider if your sending volume, deliverability risk, compliance burden, or operational complexity exceeds what you can reliably manage in-house—typically at or above 10–20k emails/day or spiky bursts, any persistent bounce/spam placement issues, lack of 24/7 monitoring, or multi-sender SPF/DKIM/DMARC needs—and you can confirm this by auditing volume/cadence, deliverability metrics, authentication…

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Intermediate

Common SPF and DKIM Misconfigurations That Hurt Deliverability

ByBrad Slavin January 22, 2026January 22, 2026 Reading Time: 5 minutes

With cyberattacks becoming so severe and sophisticated, your organization cannot afford to leave its email ecosystem inadequately protected. Moreover, since email is one of the most common targets for these attackers, it becomes all the more important to properly protect your entire environment. One of the most effective ways to protect your outgoing emails is…

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Advanced

Which Are The Best Practices For Managing SPF Records Across Multiple Office 365 Domains?

ByBrad Slavin January 22, 2026January 22, 2026 Reading Time: 11 minutes

The best practices for managing SPF records across multiple Office 365 domains are to use a per-domain baseline of v=spf1 include:spf.protection.outlook.com -all, centralize vendor authorizations via a delegated or “hub” SPF record to control the 10-lookup budget, rely on DKIM and DMARC (plus SRS where possible) to mitigate forwarding, and continuously monitor/validate changes—with automation from…

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Advanced

What Are The Most Common Issues Highlighted In An SPF Record Breakdown?

ByBrad Slavin January 21, 2026January 22, 2026 Reading Time: 11 minutes

The most common issues highlighted in an SPF record breakdown are syntax and qualifier mistakes (missing v=spf1, multiple records, malformed mechanisms), exceeding the 10-DNS-lookup limit via nested includes/redirects/mx/a, misordered and redundant mechanisms that inflate lookups, gaps and overlaps when authorizing multiple third‑party senders, misuse of ~all/-all/?all, forwarding and mailing‑list scenarios that break SPF, subdomain and…

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Intermediate

What Are The Best Practices For Creating An SPF Record For Domains Managed Through GoDaddy?

ByBrad Slavin January 20, 2026January 20, 2026 Reading Time: 10 minutes

The best practices for creating an SPF record for domains managed through GoDaddy are to publish a single TXT “v=spf1” record at the exact sending domain that authorizes only your legitimate senders (ip4/ip6/a/mx/include), avoids the deprecated SPF record type, stays under the 10-DNS-lookup limit, ends with an appropriate -all or ~all qualifier, uses change-friendly TTLs,…

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Advanced

How Do I Verify That Google Recognizes My Domain’s SPF Record?

ByBrad Slavin January 19, 2026January 19, 2026 Reading Time: 11 minutes

To verify that Google recognizes your domain’s SPF record, first query your SPF TXT record via public resolvers (for example, dig +short TXT yourdomain.com @8.8.8.8), then send a test email to a Gmail inbox and confirm spf=pass in the Authentication-Results header (or use Google’s Admin Toolbox CheckMX/Messageheader), ensuring you publish a single valid v=spf1 TXT…

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