When SPF is enabled, mail servers must verify that the domain you are attempting to send to is mentioned in your SPF record. An administrator can aid in the prevention of spam by implementing SPF, or Sender Policy Framework. Your mail server will reject the message if the sender's IP address does not match the IP address in the SPF record, but any associated spam checks you have enabled will be avoided.
SPF record creation for the Barracuda Email Security Service
The procedures to configure SPF for Barracuda Email Security Service are as follows:
You must change the DNS TXT record for SPF by logging into your DNS management interface, going to Tools & Settings > DNS Template, and clicking on that record.
The below mentioned includes include mechanisms for various nations:
Note: If you already have a Barracuda Email Security Service SPF record in your DNS, you must update it as follows to reflect the latter:
Previous SPF record: v=spf1 mx -all
Modified SPF record: v=spf1 mx include:spf.ess.barracudanetworks.com -all
Finally, you may use our SPF record-finding tool to find your record and enable DMARC for your domains by starting a DMARC trial.