Why you need DMARC, SPF and DKIM
A trio of email security protocols
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The SPF specification limits the number of DNS lookups to 10. This limit helps reduce the amount of resources used by mailbox providers when checking SPF records.
Continue ReadingYou must follow the syntax outlined in the SPF specification for your SPF record to work properly. If you do not follow these syntax rules, …
Continue ReadingSender Policy Framework (SPF) authentication verification results should be returned back to the sending Mail Transfer Agent (MTA) during the SMTP conversation. When checking for …
Continue ReadingSPF failure occurs when the sender IP address is not found in the SPF record. This means the email is sent to spam or discarded. …
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