When the SPF record on a domain can't be correctly interpreted, SPF returns a PermError (permanent error). In contrast with an SPF TempError (temporary error), an SPF PermError requires a system administrator to take measures to rectify the issue.
Here is a list of causes of SPF PermError:
multi…
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-…
It's critically important for any company using Office 365 Exchange Server for email to implement DMARC, DKIM, and SPF to prevent or stop email spoofing and phishing as well as improve email deliverability.
Office 365 has become the de facto standard for productivity software…
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…
