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 ipswitch.com.
hub.ipswitch.com [173.229.1.73]
ns1.ipswitch.com [156.21.20.20]
ns2.ipswitch.com [12.37.214.140]

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 ipswitch.com were found. A total of 7 queries (as defined by RFC4408) were performed for fetching SPF and related records.
The DNS lookups for SPF took 2905msec.
  1. Allow if the IP matches an A or AAAA record of ipswitch.com
    1. 18.214.82.233
  2. Allow if the IP matches an MX record of ipswitch.com
    1. ipswitch-com.mail.protection.outlook.com.
      1. 104.47.49.36
      2. 104.47.48.36
  3. Allow all from the range 156.21.0.0/16
  4. Allow all from the ip 173.229.1.74
  5. Allow all from the ip 184.106.114.198
  6. Allow all from the ip 72.35.20.197
  7. Inlcude 10 allow rules from host spf.protection.outlook.com.
    1. Allow all from the range 207.46.100.0/24
    2. Allow all from the range 207.46.163.0/24
    3. Allow all from the range 65.55.169.0/24
    4. Allow all from the range 157.56.110.0/23
    5. Allow all from the range 157.55.234.0/24
    6. Allow all from the range 213.199.154.0/24
    7. Allow all from the range 213.199.180.128/26
    8. Allow all from the range 52.100.0.0/14
    9. Inlcude 9 allow rules from host spfa.protection.outlook.com.
      1. Allow all from the range 157.56.112.0/24
      2. Allow all from the range 207.46.51.64/26
      3. Allow all from the range 64.4.22.64/26
      4. Allow all from the range 40.92.0.0/15
      5. Allow all from the range 40.107.0.0/16
      6. Allow all from the range 134.170.140.0/24
      7. Inlcude 11 allow rules from host spfb.protection.outlook.com.
        1. Allow all from the range 2a01:111:f400::/48
        2. Allow all from the range 23.103.128.0/19
        3. Allow all from the range 23.103.198.0/23
        4. Allow all from the range 65.55.88.0/24
        5. Allow all from the range 104.47.0.0/17
        6. Allow all from the range 23.103.200.0/21
        7. Allow all from the range 23.103.208.0/21
        8. Allow all from the range 23.103.191.0/24
        9. Allow all from the range 216.32.180.0/23
        10. Allow all from the range 94.245.120.64/26
        11. Deny all IPs which do not match any previous rule
      8. Allow all from the range 2001:489a:2202::/48
      9. Deny all IPs which do not match any previous rule
    10. Deny all IPs which do not match any previous rule
  8. Inlcude 11 allow rules from host mktomail.com.
    1. Allow all from the range 199.15.212.0/22
    2. Allow all from the range 72.3.185.0/24
    3. Allow all from the range 72.32.154.0/24
    4. Allow all from the range 72.32.217.0/24
    5. Allow all from the range 72.32.243.0/24
    6. Allow all from the range 94.236.119.0/26
    7. Allow all from the range 37.188.97.188/32
    8. Allow all from the range 185.28.196.0/22
    9. Allow all from the range 192.28.128.0/18
    10. Allow all from the range 103.237.104.0/22
    11. Soft deny all IPs which do not match any previous rule
  9. Inlcude 13 allow rules from host _spf.sendergen.com.
    1. Allow all from the ip 108.163.197.50
    2. Allow all from the ip 108.178.2.18
    3. Allow all from the ip 67.212.179.10
    4. Allow all from the ip 67.212.168.66
    5. Allow all from the ip 167.114.100.50
    6. Allow all from the ip 192.99.150.164
    7. Allow all from the ip 69.175.44.202
    8. Allow all from the ip 69.175.35.2
    9. Allow all from the ip 173.236.13.90
    10. Allow all from the ip 69.175.48.226
    11. Allow all from the ip 184.154.0.10
    12. Allow all from the ip 69.175.51.10
    13. Soft deny all IPs which do not match any previous rule
  10. Soft 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.