mdolr / survol

A browser extension to preview any link you hover
https://survol.me
Apache License 2.0
143 stars 67 forks source link

SPF +all mechanism should not be used at survol.me #159

Open readycool opened 2 years ago

readycool commented 2 years ago

A quick dig command dig survol.me TXT +short outputs "v=spf1 +all".

Page 54 of RFC 7208 shows this is an all-inclusive mechanism allowing all IP addresses to pass the SPF check. In simple terms, it means malicious actors could spam on behalf of your domain name and therefore negatively affect domain reputation.