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Professional Database: How to Reach Top Managers and Business Owners
ByBrad Slavin December 5, 2025December 5, 2025 Reading Time: 7 minutes

Reaching decision-makers has never been harder. CEOs delete generic emails without reading. Business owners ignore LinkedIn messages from strangers. Top managers filter cold calls straight to voicemail. The problem isn’t your offer. It’s your approach. You’re trying to reach people who receive hundreds of pitches weekly. Without the right contact information and strategy, your message…

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How Can I Check If My SPF Record Is Set Up Correctly Using An SPF Record Tester?
ByBrad Slavin December 5, 2025December 9, 2025 Reading Time: 14 minutes

To check if your SPF record is set up correctly, run an SPF record tester (for example, AutoSPF’s free SPF Analyzer) by entering your domain, confirm it retrieves a single valid v=spf1 TXT record, evaluate syntax and mechanisms, ensure total DNS lookups are under 10, verify all third-party senders resolve correctly, and confirm the tester…

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How Can I Use An SPF Checker To Troubleshoot Email Delivery Issues After Changing Mail Providers?
ByBrad Slavin December 5, 2025December 5, 2025 Reading Time: 13 minutes

Use an SPF checker to fetch your current SPF record, validate syntax, confirm the new provider’s include and IPs, simulate sending IPs for pass/fail, measure DNS lookups and redirects, check interactions with A/MX, and pair results with DKIM/DMARC alignment and propagation status to prioritize fixes—AutoSPF automates each step with one-click checks, simulations, and guided remediations….

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How Can I Use An SPF Lookup Tool To Count DNS Lookups And Reduce Them Under The 10-Lookup Limit?
ByBrad Slavin December 2, 2025December 2, 2025 Reading Time: 15 minutes

Use an SPF lookup tool to recursively expand your SPF record, count every DNS‑querying mechanism and modifier—specifically include, a, mx, ptr, exists, and redirect—and then reduce that total below 10 by removing redundancies, replacing lookup-based checks with ip4/ip6 ranges (flattening), consolidating overlapping mechanisms, and verifying the new count in the tool after each change. To…

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Is There An SPF Flattener That Supports Per-Sender Rate Limiting Or Change Windows To Avoid DNS Thrashing?
ByBrad Slavin December 1, 2025December 1, 2025 Reading Time: 13 minutes

Yes—“per-sender rate limiting” for SPF flattening is not a common, publicly advertised feature; a few platforms support scheduled publishing or change windows, but true per-sender throttling is rare. AutoSPF is designed to fill this gap by providing configurable, per-sender (per mail-from/subdomain) rate limits and change windows to avoid DNS thrashing while keeping SPF compliant and…

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How can I test an SPF flattener’s compatibility with DMARC and DKIM?
ByBrad Slavin December 1, 2025December 1, 2025 Reading Time: 10 minutes

To test an SPF flattener’s compatibility with DMARC and DKIM, first publish the flattened SPF in a non-authoritative “shadow” label, run DNS and lookup-budget checks, simulate end-to-end mail flows from every sender with DKIM signed, validate SPF/DKIM pass and DMARC alignment under relaxed/strict modes, and monitor aggregate and real-time metrics before and after a phased…

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How can I safely flatten SPF records while preserving SPF validation?
ByBrad Slavin November 28, 2025November 28, 2025 Reading Time: 12 minutes

You can safely flatten SPF records while preserving SPF validation by recursively expanding includes/redirects into explicit ip4/ip6 mechanisms within the 10-lookup budget, scheduling automated re-flattening with atomic DNS updates and monitoring, and combining selective flattening, subdomain delegation, and stable includes to maintain equivalent semantics across major receivers. Flattening SPF is the process of replacing mechanisms…

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AutoSPF’s Guide to Configuring SPF & DKIM for Avanan: A Detailed Walk-through
ByBrad Slavin November 26, 2025November 28, 2025 Reading Time: 9 minutes

As AutoSPF, my mission is simple: to help you lock down your email infrastructure so your domain only sends legitimate mail, and to make spam, impersonation, and spoofing attacks nearly impossible. In this guide, I’ll walk you through — step by step — how to configure your domain for use with Avanan, using the powerful…

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Top Ways To Resolve Too Many SPF Lookups Without Breaking Authentication
ByBrad Slavin November 13, 2025November 13, 2025 Reading Time: 13 minutes

The Sender Policy Framework (SPF) is a critical email authentication technology designed to detect and prevent email spoofing—an often exploited mechanism by malicious actors to impersonate legitimate senders like victim.com or corporate ESPs such as Microsoft Office 365 or Gmail. By publishing a carefully constructed SPF record in the Domain Name System (DNS), domain owners…

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Mastering SPF Syntax Multiple Include: Tips For Managing Complex Spf Records
ByBrad Slavin October 30, 2025October 30, 2025 Reading Time: 14 minutes

Sender Policy Framework (SPF) is a critical email authentication protocol designed to prevent email spoofing by specifying which mail servers are authorized to send emails on behalf of a domain. Implemented as a DNS TXT record, an SPF record holds SPF syntax directives that guide receiving mail servers—such as those operated by Microsoft, Google, and…

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