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Description
Describe the bug
An SPF record is a type of Domain Name Service (DNS) record that identifies which mail servers are permitted to send an email on behalf of your domain. The purpose of an SPF record is to prevent spammers from sending messages with forged from addresses at your domain.
Steps to reproduce
Checking Missing SPF:-There Are Various Ways of Checking Missing SPF Records on a website But the
Steps to Check SPF Records on a website:-Go to http://www.kitterman.com/spf/validate.html
Enter Target Website: gitpod.io
If you seem any SPF Record than Domain is Not Vulnerable But if you see Nothing Here then "HURRAY! You Found a Bug"
Expected behavior
Attack Scenario PoC:-
Once there is No SPF Records.
An Attacker Can Spoof Email Via any Fake Mailer Like emkei.cz
Attacker Can Send Email From the name "Gitpod Security " and Email: support@gitpod.io (Screenshot attached of the mail received from the fake id) or security@gitpod.io With Social Engineering Attack He can take over User Account
Let Victim Knows the Phishing Attack but When He See The Email from the Authorized Domain.
They can get tricked Easily.