Our blog shares expert insights on email security, DMARC configuration, and deliverability optimization.
The aspf tag controls how strictly DMARC checks SPF alignment. Most people leave it at the default and that's usually fine. Here's when you might want to change it.
SPF failures show up in your DMARC reports or email headers, but the reason is not always obvious. We break down the common causes of SPF failures and walk through practical troubleshooting steps.
Publishing SPF, DKIM, and DMARC records is just the start. Without monitoring, you won't know when authentication breaks, new senders appear, or someone starts spoofing you.
SPF looks simple until you hit the 10 DNS lookup limit and break your email authentication. Our free SPF generator helps you build valid records, warns about lookup limits, and shows you exactly which services are consuming your budget.
Forum threads keep repeating the same confusion: "SPF and DKIM pass, so why does DMARC fail?" The missing mental model is DMARC alignment. We explain aspf/adkim, organizational vs strict alignment, and why you likely rely on DKIM alignment more than you think.
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