Answers To Questions Surrounding SPF Permerror Office 365
SPF Permerror or SPF permanent error is one of the messages that commonly appear in many Sender Policy Framework implementations. The SPF permerror Office 365 causes email non-delivery and happens when multiple SPF records exist on a single domain, a syntax error occurs, or the SPF 10-DNS-lookup limit is exceeded. The SPF permerror is different from the SPF neutral message, where the domain owner is aware of the outcome.
The most common of these SPF errors is the “too many DNS lookups,” error, treated as an SPF fail by DMARC if there are more than 10 DNS mechanism lookups. These mechanisms also include the ‘a,’ ‘mx,’ ‘ptr,’ ‘exists,’ ‘include,’ and ‘redirect’ modifiers.
How To Avoid SPF Permerror?
- Removing Mechanisms: The first logical way to avoid SPF permerrors relating to DNS lookups is to reduce mechanisms and keep them below ten.
- SPF Record Flattening: This technique reduces the number of DNS mechanisms by converting complex SPF records into IP address lists.
- SPF Record Check: Several SPF Record checkers are available online, which may be utilized to look for SPF errors. With the errors found, a domain owner can work on eliminating them.
Understanding SPF Permerror Office 365
Setting up SPF in Microsoft Office 365 is advisable to prevent spoofing and ensure efficient email delivery. However, the following things need to be kept in mind to avoid SPF permerror Office 365.
- Create only one SPF TXT record for your custom domain.
- Create separate records for subdomains.
- Avoid exceeding the 10 DNS lookups limit, lest the receiver’s mail server reports a permerror.
- Check if the referenced domains are active to remove unnecessary domains from the SPF record.
Email deliverability is one of the primary objectives when it comes to email authentication. SPF authentication errors such as SPF permerror and SPF temperror act as hindrances to email deliverability. SPF permerror Office 365 can be avoided by taking the measures as mentioned above.
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