After suffering a compromised account due to a phishing email i wanted to look at better protection against this.
In this scenario a malicious sender was able spoof our domain as Sender.
We use a ProofPoint email gateway appliance and i posed the question to them and they responded suggesting a SPF Record on our public dns information.
While I am trying to get an understanding of how that works, i would like to understand the potential Impact of such a change.
Obviously if the SPF record is wrong or there are additional IP's we need to list then mail may fail to be delivered.
But do you think there may be any mail delivery delays with an SPF record?