Your Dynamic and Hassle-free SPF Flattening tool
A One-Click Automatic SPF flattening tool for your Sender Policy Framework Record. Instantly flatten SPF records for multiple domains and accounts, and stay updated on uninformed changes to authorized IPs. Excessive lookups? Not anymore! We make sure you don’t exceed the 10 DNS lookup limit.
Our Dynamic SPF flattening tool converts SPF records into a compressed format that reduces your DNS lookup count, ensuring that the record contains fewer than 10 DNS lookups. It works by replacing all the domains in the SPF record with their IP addresses, which eliminates the need for multiple DNS queries. SPF record compression can be useful for troubleshooting your DNS record for SPF and making sure your email authentication protocol validates legitimate emails properly.
Our SPF Flattening service helps domain owners restrict the number of DNS lookups to stay below the RFC-specified limit of 10. Complying with the DNS lookup limitation ensures proper functioning of the SPF authentication system, and prevents unwanted errors.
Your DNS record for SPF instructs receiving email servers to perform DNS lookups for every included record during authentication checks. Every included record adds an extra DNS query. When the number of lookups exceeds the limit of 10, SPF breaks for your email. leaving it vulnerable to phishing attacks. This may result in false negatives, and unreasonable load and impact your email deliverability metrics.
Each email provider or vendor brings in their own set of complications by adding more records to your SPF, leading to additional DNS lookups! When using multiple vendors and email clients there is no way to avoid this DNS lookup error.
9 out of 10 domain owners face email deliverability issues because of the 10 DNS lookup limit for SPF, and they have no clue about what is going wrong!
Automatic SPF flattening is a hassle-free solution to mitigate this error that shows instant results and works even for organizations using multiple email vendors.
During the dynamic SPF flattening process, SPF records are replaced with their subsequent IP addresses, reducing the number of lookups during checks.
“a”, “mx”, and “include” mechanisms are removed as a part of the SPF compression process to decrease redundancy and lookups even further.
When you perform an SPF record flattening, the record is overall much more simplified and straightforward, reducing error messages and helping streamline the authentication process.
During flattening the original SPF record’s include mechanisms are replaced by IP addresses to reduce the frequency of DNS lookups.
example.com. IN TXT “v=spf1 include:_spf.company.com ~all”
Number of DNS lookups: 4
Manually Flattened SPF record:
example.com. IN TXT “v=spf1 ip4:192.168.0.1 ip4:10.0.0.1 ip4:172.16.0.1
ip4:203.0.113.45 ip4:87.65.43.21 ip6:2001:0db8:85a3:0000:0000:8a2e:0370:7334 ip6:2001:0db8:1c0d:0000:0000:0e3f:0a33:9a72 ~all”
Number of DNS lookups: 0
If your email service provider changes their infrastructure, you’re going to have to change your SPF records accordingly. This means contacting your domain registrar or domain operator every single time to implement the changes to your DNS settings.
While manually flattening SPF will reduce the number of DNS lookups significantly, your record will be lengthy and may exceed the character limit – leading to error.
On implementing an automatic SPF flattening tool, you will experience the following benefits:
Key Features
Simply flattening your SPF record isn’t enough. Here are a few SPF best practices that further help you mitigate delivery issues.
