SPF records are crucial for maintaining the
deliverability of your email campaigns. By specifying which servers can send emails on behalf of your domain, SPF helps ensure that your
marketing emails reach the intended recipients' inboxes rather than getting flagged as
spam.
Technically, a domain should not have multiple SPF records. Having more than one SPF record can result in a
permanent error and cause email authentication to fail. Instead, you should combine all authorized servers into a single SPF record.
If you need to authorize multiple mail servers, you should combine them into one SPF record using the
include mechanism. For example, if you have two SPF records like:
v=spf1 include:spf.server1.com -all
v=spf1 include:spf.server2.com -all
You should combine them into a single SPF record:
v=spf1 include:spf.server1.com include:spf.server2.com -all
You can use various
online tools to check your SPF record. These tools will verify whether your SPF record is correctly configured and whether there are any issues, such as multiple SPF records or syntax errors.
Best Practices for SPF Records in Email Marketing
To ensure optimal performance of your email marketing campaigns, follow these best practices:
Always use a single SPF record for your domain.
Combine multiple mail servers using the
include mechanism.
Regularly audit and update your SPF record to include all authorized mail servers.
Monitor your email deliverability to identify any issues related to SPF.