#Spf barracuda mac mail server verification

#Spf barracuda mac mail server verification

This option is configurable from the Advanced Configuration section of the Domains > Domain Settings page and, if enabled, Email Gateway Defense makes the IP address of your sending mail server visible to the agent performing SPF verification on the recipient's end.Įnable or disable the SPF features from the Inbound Settings > Sender Authentication page.

Note that if you enable SPF, you may want to enable the Sender Rewriting Scheme (SRS). This setting applies only to inbound mail. If the message fails the SPF check, it is assumed to be spam. When receiving a message from a domain, the recipient can check those records to verify mail is coming from a designated sending machine. SPF works by having domains publish reverse MX records to display which machines are designated as mail sending machines for that domain. The current version of SPF protects the envelope sender address, which is used for message delivery. SPF is an open standard specifying a method to prevent sender address forgery. For more information on SPF, see the Sender Policy Framework Project Overview. This is because the mail is coming from an Email Gateway Defense IP address not in the sender's SPF record. If this is not done, your SPF checker will block mail from domains with an SPF record set to Block. See Email Gateway Defense IP Ranges for a list of IP addresses based on your Barracuda instance. If you have Sender Policy Framework (SPF) checking enabled on your mail server or network, it is critical when using Email Gateway Defense that you either disable SPF checking in the service or add Email Gateway Defense IP ranges to your SPF exemptions based on your Barracuda instance.