rgi-admin

A trio of email security protocols

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.

Including domains in your SPF record

You must follow the syntax outlined in the SPF specification for your SPF record to work properly. If you do not follow these syntax rules, …

Sender Policy Framework (SPF) authentication verification results should be returned back to the sending Mail Transfer Agent (MTA) during the SMTP conversation. When checking for …

SPF 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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