SPF Record Checker

Please enter a host name to check.

Example host names with SPF records:
ipswitch.com, microsoft.com, google.com, gmail.com, apple.com, postini.com, ebay.com, okinawatimes.co.jp, bitcointalk.org, thecannells.org, facebook.com, shaw.ca, ubs.com, kitterman.com

SPF checker created by an author of the SPF RFC4408.
http://www.kitterman.com/spf/validate.html

 

The following nameservers were found for the hostname facebook.com.
a.ns.facebook.com [69.171.239.12]
b.ns.facebook.com [69.171.255.12]

The SPF entries includes at least one CNAME which is known to cause problems on some mail servers.


The following rules for the host name facebook.com were found. A total of 2 queries (as defined by RFC4408) were performed for fetching SPF and related records.
The DNS lookups for SPF took 186msec.
  1. Redirect to host _spf.facebook.com with 10 rules.
    1. Allow all from the ip 69.63.179.25
    2. Allow all from the range 69.63.178.128/25
    3. Allow all from the range 69.63.184.0/25
    4. Allow all from the range 66.220.144.128/25
    5. Allow all from the range 66.220.155.0/24
    6. Allow all from the range 69.171.232.0/24
    7. Allow all from the range 66.220.157.0/25
    8. Allow all from the range 69.171.244.0/24
    9. Allow if the IP matches an MX record of facebook.com
      1. msgin.vvv.facebook.com.
        1. 173.252.99.1
    10. Deny all IPs which do not match any previous rule
Allow means that the stated addresses are allowed to send emails.
Soft deny means that the stated addresses are not allowed to send emails.
Deny means that emails from the stated addresses must not be accepted.