An SPF record is a TXT record published in the DNS by the domain owner, which specifies a whitelist of IP addresses allowed to send emails on behalf of the domain. When an email reaches the receiving server, the server will look up the SPF record in the DNS, and perform a check to determine if the e…
When the SPF PermError: Too Many DNS Lookups issue strikes, your email deliverability can take a bad hit due to SPF fail. We will explain how automatic/dynamic SPF record flattening can solve this problem below.
Nowadays, more and more services are necessary to run online operations on a day-to-…
"SPF PermError: too many DNS lookups" is a common error seen in many SPF (Sender Policy Framework) implementations. When an often overlooked SPF 10-DNS-lookup limit is exceeded, an SPF PermError, aka SPF permanent error, is returned. SPF PermError's can affect your email deliverability…
This article explains what BIMI is, how to implement it to increase email credibility, boost engagement rate, and improve email deliverability and open rates.
What is BIMI?BIMI, short for Brand Indicator for Message Identification, allows domain owners to coordinate with email clients to displa…
DMARC, short for Domain-based Message Authentication, Reporting & Conformance, is an email authentication protocol to check if an email message really originates from where it claims to have, based on SPF and DKIM, another two email authentication protocols…
Email end users check the from field in their email clients to tell where an email comes from. However, SPF doesn't authenticate the field, neither does DKIM. This means "what you see might not be what's been authenticated". That's why the identifier alignment mechanism is introduced in DMARC…
