SPF Check:
aad.org

1. Specify domain name

Enter a domain to be checked for the SPF record
2. Specify IP address (optional)
Enter any IP address to check if it is authorized to send e-mails by the SPF record

What is the SPF lookup for?

With the SPF lookup you analyze the SPF record of a domain for errors, security risks and authorized IP addresses. Optionally, you can specify an IP address to check if it is authorized to send e-mail on behalf of the domain. The SPF lookup analyzes registered TXT records in real time. If you want to specify an SPF record manually, use the SPF Analyzer.

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SPF check passed

Your SPF record check result
  •   SPF record found
  •   Syntax check: 0 errors
  •   Email Anti-Spoofing: Good

Your overall domain security

SPF is only one of 11 security factors. Your domain still has critical gaps.

Email authentication
SPF DKIM ? DMARC ?
Email transport
TLS ? MTA-STS ? TLSRPT ? DANE ?
Reputation
DNSBL ? BIMI ?
Certificate control
DNSSEC ? CAA ?
Summary of the SPF check

Does a valid SPF record exist?
An SPF record was found for the domain aad.org.
The SPF record for aad.org is valid.
The syntax check of the SPF record shows no obvious errors.

Which IP-s are legitimate to send emails?
The SPF record contains a reference to external rules, which means that the validity of the SPF record depends on at least one other domain. A detailed list of the rules used externally can be found in the analysis result. In total, 165 IP address(es) were authorized by the SPF record to send emails.

The SPF record analysis was performed on 18.08.2026 at 18:46:46 clock.

Lookup for the domain:
aad.org
IP address to be checked:
no IP address specified
Find out now: The BSI's Email Security Year 2025
This way, you'll be well prepared and can now strengthen your email security in a targeted manner.
Find out now: The BSI's Email Security Year 2025

Evaluation for the domain aad.org 

Nameserverset:
ns-142.awsdns-17.com
ns-608.awsdns-12.net
ns-1382.awsdns-44.org
ns-2015.awsdns-59.co.uk
Determined SPF record:
Legitimated IP addresses:
IP Provider / ASN DNSBL-Check
207.211.31.0/25
Navisite Opco LLC blacklist 
205.139.110.0/24
Mimecast North America Inc blacklist 
216.205.24.0/24
Mimecast North America Inc blacklist 
170.10.129.0/24
Mimecast North America Inc blacklist 
63.128.21.0/24
Mimecast North America Inc blacklist 
170.10.133.0/24
Mimecast North America Inc blacklist 
185.58.84.93 Mimecast Services Limited blacklist 
207.211.41.113 Navisite Opco LLC blacklist 
207.211.30.64/26
Mimecast North America Inc blacklist 
207.211.30.128/25
Mimecast North America Inc blacklist 
216.145.221.0/24
Amazon.com, Inc. blacklist 
170.10.128.0/24
Mimecast North America Inc blacklist 
170.10.132.56/29
Mimecast North America Inc blacklist 
170.10.132.64/29
Mimecast North America Inc blacklist 
167.89.0.0/17
SendGrid, Inc. blacklist 
208.117.48.0/20
SendGrid, Inc. blacklist 
50.31.32.0/19
SendGrid, Inc. blacklist 
198.37.144.0/20
SendGrid, Inc. blacklist 
198.21.0.0/21
SendGrid, Inc. blacklist 
192.254.112.0/20
SendGrid, Inc. blacklist 
168.245.0.0/17
SendGrid, Inc. blacklist 
149.72.0.0/16
Amazon.com, Inc. blacklist 
159.183.0.0/16
SendGrid, Inc. blacklist 
134.128.64.0/19
SendGrid, Inc. blacklist 
134.128.96.0/19
SendGrid, Inc. blacklist 
223.165.113.0/24
SendGrid, Inc. blacklist 
223.165.115.0/24
SendGrid, Inc. blacklist 
223.165.118.0/23
SendGrid, Inc. blacklist 
223.165.120.0/23
SendGrid, Inc. blacklist 
103.151.192.0/23
Amazon.com, Inc. blacklist 
185.12.80.0/22
- blacklist 
188.172.128.0/20
- blacklist 
192.161.144.0/20
- blacklist 
216.198.0.0/18
Amazon.com, Inc. blacklist 
185.41.28.0/22
Sendinblue SAS blacklist 
94.143.16.0/21
Sendinblue SAS blacklist 
185.24.144.0/22
Sendinblue SAS blacklist 
153.92.224.0/19
Sendinblue SAS blacklist 
213.32.128.0/18
Sendinblue SAS blacklist 
185.107.232.0/22
Sendinblue SAS blacklist 
77.32.128.0/18
Sendinblue SAS blacklist 
77.32.192.0/19
Sendinblue SAS blacklist 
212.146.192.0/18
Sendinblue SAS blacklist 
172.246.0.0/18
Sendinblue SAS blacklist 
199.87.209.0/24
- blacklist 
52.62.199.66 Amazon.com, Inc. blacklist 
52.63.210.175 Amazon.com, Inc. blacklist 
52.19.0.156 Amazon.com, Inc. blacklist 
34.242.34.203 Amazon.com, Inc. blacklist 
15.157.154.20 Amazon.com, Inc. blacklist 
3.97.56.230 Amazon.com, Inc. blacklist 
18.233.211.170 Amazon.com, Inc. blacklist 
18.210.219.222 Amazon.com, Inc. blacklist 
16.50.78.62 Amazon.com, Inc. blacklist 
16.51.180.22 Amazon.com, Inc. blacklist 
18.196.254.50 Amazon.com, Inc. blacklist 
3.75.50.121 Amazon.com, Inc. blacklist 
40.176.107.168 Amazon.com, Inc. blacklist 
40.176.215.184 Amazon.com, Inc. blacklist 
20.109.99.74 Microsoft Corporation blacklist 
20.97.237.150 Microsoft Corporation blacklist 
20.122.187.209 Microsoft Corporation blacklist 
20.10.6.183 Microsoft Corporation blacklist 
20.1.175.150 Microsoft Corporation blacklist 
104.209.145.54 Microsoft Corporation blacklist 
18.198.129.203 Amazon.com, Inc. blacklist 
52.52.134.28 Amazon.com, Inc. blacklist 
18.222.100.37 Amazon.com, Inc. blacklist 
18.220.6.173 Amazon.com, Inc. blacklist 
13.89.129.61 Microsoft Corporation blacklist 
40.86.47.187 Microsoft Corporation blacklist 
34.211.36.37 Amazon.com, Inc. blacklist 
34.209.22.161 Amazon.com, Inc. blacklist 
18.219.211.170 Amazon.com, Inc. blacklist 
52.179.183.89 Microsoft Corporation blacklist 
13.88.170.98 Microsoft Corporation blacklist 
20.192.29.133 Microsoft Corporation blacklist 
44.240.143.150 Amazon.com, Inc. blacklist 
52.52.30.41 Amazon.com, Inc. blacklist 
54.203.18.106 Amazon.com, Inc. blacklist 
20.65.115.153 Microsoft Corporation blacklist 
52.165.249.35 Microsoft Corporation blacklist 
20.242.106.212 Microsoft Corporation blacklist 
52.252.111.27 Microsoft Corporation blacklist 
52.214.168.26 Amazon.com, Inc. blacklist 
172.203.43.191 Microsoft Corporation blacklist 
18.189.12.235 Amazon.com, Inc. blacklist 
18.223.41.86 Amazon.com, Inc. blacklist 
23.21.109.197 Amazon.com, Inc. blacklist 
23.21.109.212 Amazon.com, Inc. blacklist 
147.160.167.14 Amazon.com, Inc. blacklist 
147.160.167.15 Amazon.com, Inc. blacklist 
52.49.235.189 Amazon.com, Inc. blacklist 
52.49.201.246 Amazon.com, Inc. blacklist 
205.139.105.48/29
Level 3 Parent, LLC blacklist 
206.79.6.128/26
Level 3 Parent, LLC blacklist 
208.40.241.140/30
Expedient blacklist 
216.37.18.6 Expedient blacklist 
204.8.10.114 Hancock Rural Telephone Corp. blacklist 
216.235.197.198 - blacklist 
64.209.141.221 Level 3 Parent, LLC blacklist 
205.139.104.0/22
Level 3 Parent, LLC blacklist 
216.235.196.0/22
- blacklist 
216.235.200.0/21
Level 3 Parent, LLC blacklist 
216.235.195.0/24
Blackbaud, Inc. blacklist 
157.55.136.93 Microsoft Corporation blacklist 
51.132.24.176 Microsoft Corporation blacklist 
13.75.174.156 Microsoft Corporation blacklist 
147.160.167.0/26
Amazon.com, Inc. blacklist 
54.208.161.176 Amazon.com, Inc. blacklist 
54.208.181.200 Amazon.com, Inc. blacklist 
54.208.202.83 Amazon.com, Inc. blacklist 
54.209.164.224 Amazon.com, Inc. blacklist 
54.209.195.9 Amazon.com, Inc. blacklist 
54.209.207.242 Amazon.com, Inc. blacklist 
54.209.26.183 Amazon.com, Inc. blacklist 
54.209.27.217 Amazon.com, Inc. blacklist 
54.209.41.25 Amazon.com, Inc. blacklist 
54.84.172.88 Amazon.com, Inc. blacklist 
54.84.71.166 Amazon.com, Inc. blacklist 
54.85.157.140 Amazon.com, Inc. blacklist 
54.85.181.203 Amazon.com, Inc. blacklist 
54.85.185.66 Amazon.com, Inc. blacklist 
54.85.26.5 Amazon.com, Inc. blacklist 
54.85.39.4 Amazon.com, Inc. blacklist 
100.26.6.215 Amazon.com, Inc. blacklist 
54.226.141.130 Amazon.com, Inc. blacklist 
34.225.152.166 Amazon.com, Inc. blacklist 
100.25.230.100 Amazon.com, Inc. blacklist 
52.6.78.230 Amazon.com, Inc. blacklist 
52.6.81.149 Amazon.com, Inc. blacklist 
52.6.17.79 Amazon.com, Inc. blacklist 
52.4.34.132 Amazon.com, Inc. blacklist 
3.224.68.51 Amazon.com, Inc. blacklist 
3.95.46.116 Amazon.com, Inc. blacklist 
3.92.40.162 Amazon.com, Inc. blacklist 
3.86.119.141 Amazon.com, Inc. blacklist 
35.164.222.189 Amazon.com, Inc. blacklist 
52.39.217.30 Amazon.com, Inc. blacklist 
52.42.48.186 Amazon.com, Inc. blacklist 
52.35.219.37 Amazon.com, Inc. blacklist 
35.163.134.248 Amazon.com, Inc. blacklist 
52.42.109.152 Amazon.com, Inc. blacklist 
54.218.179.45 Amazon.com, Inc. blacklist 
35.164.11.212 Amazon.com, Inc. blacklist 
52.42.90.23 Amazon.com, Inc. blacklist 
52.32.175.174 Amazon.com, Inc. blacklist 
34.216.208.24 Amazon.com, Inc. blacklist 
35.166.116.137 Amazon.com, Inc. blacklist 
74.125.0.0/16
Google LLC blacklist 
209.85.128.0/17
Google LLC blacklist 
128.103.229.181 Harvard University blacklist 
128.103.109.33 Harvard University blacklist 
74.209.251.23 DataBank Holdings, Ltd. blacklist 
167.89.90.135 SendGrid, Inc. blacklist 
168.245.94.198 SendGrid, Inc. blacklist 
168.245.67.111 SendGrid, Inc. blacklist 
149.72.27.45 SendGrid, Inc. blacklist 
167.89.28.100 SendGrid, Inc. blacklist 
2001:4860:4864::/56
Google LLC blacklist 
2404:6800:4864::/56
Google LLC blacklist 
2607:f8b0:4864::/56
Google LLC blacklist 
2800:3f0:4864::/56
Google LLC blacklist 
2a00:1450:4864::/56
Google LLC blacklist 
2c0f:fb50:4864::/56
Google LLC blacklist 
SPF-Syntax Check:
Analysis result of the SPF record for the domain: aad.org

SPF record available?

We found an SPF record for the domain.

v=spf1

Will be forwarded to another SPF record?

There is an SPF record that refers to another SPF record Additional entries in this record are therefore ignored.

redirect:8qlsfxkg._spf._d.mim.ec
v=spf1 exists:%{i}._spf.sparkpostmail.com ip4:207.211.31.0/25 ip4:205.139.110.0/24 ip4:216.205.24.0/24 ip4:170.10.129.0/24 ip4:63.128.21.0/24 ip4:170.10.133.0/24 ip4:185.58.84.93 ip4:207.211.41.113 ip4:207.211.30.64/26 ip4:207.211.30.128/25 ip4:216.145.221.0/24 ip4:170.10.128.0/24 ip4:170.10.132.56/29 ip4:170.10.132.64/29 ip4:167.89.0.0/17 ip4:208.117.48.0/20 ip4:50.31.32.0/19 include:8qlsfxkg1._spf._d.mim.ec ~all
ipv4:
207.211.31.0/25
ipv4:
205.139.110.0/24
ipv4:
216.205.24.0/24
ipv4:
170.10.129.0/24
ipv4:
63.128.21.0/24
ipv4:
170.10.133.0/24
ipv4:
185.58.84.93
ipv4:
207.211.41.113
ipv4:
207.211.30.64/26
ipv4:
207.211.30.128/25
ipv4:
216.145.221.0/24
ipv4:
170.10.128.0/24
ipv4:
170.10.132.56/29
ipv4:
170.10.132.64/29
ipv4:
167.89.0.0/17
ipv4:
208.117.48.0/20
ipv4:
50.31.32.0/19
include:8qlsfxkg1._spf._d.mim.ec
v=spf1 ip4:198.37.144.0/20 ip4:198.21.0.0/21 ip4:192.254.112.0/20 ip4:168.245.0.0/17 ip4:149.72.0.0/16 ip4:159.183.0.0/16 ip4:134.128.64.0/19 ip4:134.128.96.0/19 ip4:223.165.113.0/24 ip4:223.165.115.0/24 ip4:223.165.118.0/23 ip4:223.165.120.0/23 ip4:103.151.192.0/23 ip4:185.12.80.0/22 ip4:188.172.128.0/20 ip4:192.161.144.0/20 ip4:216.198.0.0/18 ip4:185.41.28.0/22 ip4:94.143.16.0/21 include:8qlsfxkg2._spf._d.mim.ec ~all
ipv4:
198.37.144.0/20
ipv4:
198.21.0.0/21
ipv4:
192.254.112.0/20
ipv4:
168.245.0.0/17
ipv4:
149.72.0.0/16
ipv4:
159.183.0.0/16
ipv4:
134.128.64.0/19
ipv4:
134.128.96.0/19
ipv4:
223.165.113.0/24
ipv4:
223.165.115.0/24
ipv4:
223.165.118.0/23
ipv4:
223.165.120.0/23
ipv4:
103.151.192.0/23
ipv4:
185.12.80.0/22
ipv4:
188.172.128.0/20
ipv4:
192.161.144.0/20
ipv4:
216.198.0.0/18
ipv4:
185.41.28.0/22
ipv4:
94.143.16.0/21
include:8qlsfxkg2._spf._d.mim.ec
v=spf1 ip4:185.24.144.0/22 ip4:153.92.224.0/19 ip4:213.32.128.0/18 ip4:185.107.232.0/22 ip4:77.32.128.0/18 ip4:77.32.192.0/19 ip4:212.146.192.0/18 ip4:172.246.0.0/18 ip4:199.87.209.0/24 ip4:52.62.199.66 ip4:52.63.210.175 ip4:52.19.0.156 ip4:34.242.34.203 ip4:15.157.154.20 ip4:3.97.56.230 ip4:18.233.211.170 ip4:18.210.219.222 ip4:16.50.78.62 ip4:16.51.180.22 ip4:18.196.254.50 ip4:3.75.50.121 include:8qlsfxkg3._spf._d.mim.ec ~all
ipv4:
185.24.144.0/22
ipv4:
153.92.224.0/19
ipv4:
213.32.128.0/18
ipv4:
185.107.232.0/22
ipv4:
77.32.128.0/18
ipv4:
77.32.192.0/19
ipv4:
212.146.192.0/18
ipv4:
172.246.0.0/18
ipv4:
199.87.209.0/24
ipv4:
52.62.199.66
ipv4:
52.63.210.175
ipv4:
52.19.0.156
ipv4:
34.242.34.203
ipv4:
15.157.154.20
ipv4:
3.97.56.230
ipv4:
18.233.211.170
ipv4:
18.210.219.222
ipv4:
16.50.78.62
ipv4:
16.51.180.22
ipv4:
18.196.254.50
ipv4:
3.75.50.121
include:8qlsfxkg3._spf._d.mim.ec
v=spf1 ip4:40.176.107.168 ip4:40.176.215.184 ip4:20.109.99.74 ip4:20.97.237.150 ip4:20.122.187.209 ip4:20.10.6.183 ip4:20.1.175.150 ip4:104.209.145.54 ip4:18.198.129.203 ip4:52.52.134.28 ip4:18.222.100.37 ip4:18.220.6.173 ip4:13.89.129.61 ip4:40.86.47.187 ip4:34.211.36.37 ip4:34.209.22.161 ip4:18.219.211.170 ip4:52.179.183.89 ip4:13.88.170.98 ip4:20.192.29.133 ip4:44.240.143.150 include:8qlsfxkg4._spf._d.mim.ec ~all
ipv4:
40.176.107.168
ipv4:
40.176.215.184
ipv4:
20.109.99.74
ipv4:
20.97.237.150
ipv4:
20.122.187.209
ipv4:
20.10.6.183
ipv4:
20.1.175.150
ipv4:
104.209.145.54
ipv4:
18.198.129.203
ipv4:
52.52.134.28
ipv4:
18.222.100.37
ipv4:
18.220.6.173
ipv4:
13.89.129.61
ipv4:
40.86.47.187
ipv4:
34.211.36.37
ipv4:
34.209.22.161
ipv4:
18.219.211.170
ipv4:
52.179.183.89
ipv4:
13.88.170.98
ipv4:
20.192.29.133
ipv4:
44.240.143.150
include:8qlsfxkg4._spf._d.mim.ec
v=spf1 ip4:52.52.30.41 ip4:54.203.18.106 ip4:20.65.115.153 ip4:52.165.249.35 ip4:20.242.106.212 ip4:52.252.111.27 ip4:52.214.168.26 ip4:172.203.43.191 ip4:18.189.12.235 ip4:18.223.41.86 ip4:23.21.109.197 ip4:23.21.109.212 ip4:147.160.167.14 ip4:147.160.167.15 ip4:52.49.235.189 ip4:52.49.201.246 ip4:205.139.105.48/29 ip4:206.79.6.128/26 ip4:208.40.241.140/30 ip4:216.37.18.6 ip4:204.8.10.114 include:8qlsfxkg5._spf._d.mim.ec ~all
ipv4:
52.52.30.41
ipv4:
54.203.18.106
ipv4:
20.65.115.153
ipv4:
52.165.249.35
ipv4:
20.242.106.212
ipv4:
52.252.111.27
ipv4:
52.214.168.26
ipv4:
172.203.43.191
ipv4:
18.189.12.235
ipv4:
18.223.41.86
ipv4:
23.21.109.197
ipv4:
23.21.109.212
ipv4:
147.160.167.14
ipv4:
147.160.167.15
ipv4:
52.49.235.189
ipv4:
52.49.201.246
ipv4:
205.139.105.48/29
ipv4:
206.79.6.128/26
ipv4:
208.40.241.140/30
ipv4:
216.37.18.6
ipv4:
204.8.10.114
include:8qlsfxkg5._spf._d.mim.ec
v=spf1 ip4:216.235.197.198 ip4:64.209.141.221 ip4:205.139.104.0/22 ip4:216.235.196.0/22 ip4:216.235.200.0/21 ip4:216.235.195.0/24 ip4:157.55.136.93 ip4:51.132.24.176 ip4:13.75.174.156 ip4:147.160.167.0/26 ip4:54.208.161.176 ip4:54.208.181.200 ip4:54.208.202.83 ip4:54.209.164.224 ip4:54.209.195.9 ip4:54.209.207.242 ip4:54.209.26.183 ip4:54.209.27.217 ip4:54.209.41.25 ip4:54.84.172.88 include:8qlsfxkg6._spf._d.mim.ec ~all
ipv4:
216.235.197.198
ipv4:
64.209.141.221
ipv4:
205.139.104.0/22
ipv4:
216.235.196.0/22
ipv4:
216.235.200.0/21
ipv4:
216.235.195.0/24
ipv4:
157.55.136.93
ipv4:
51.132.24.176
ipv4:
13.75.174.156
ipv4:
147.160.167.0/26
ipv4:
54.208.161.176
ipv4:
54.208.181.200
ipv4:
54.208.202.83
ipv4:
54.209.164.224
ipv4:
54.209.195.9
ipv4:
54.209.207.242
ipv4:
54.209.26.183
ipv4:
54.209.27.217
ipv4:
54.209.41.25
ipv4:
54.84.172.88
include:8qlsfxkg6._spf._d.mim.ec
v=spf1 ip4:54.84.71.166 ip4:54.85.157.140 ip4:54.85.181.203 ip4:54.85.185.66 ip4:54.85.26.5 ip4:54.85.39.4 ip4:100.26.6.215 ip4:54.226.141.130 ip4:34.225.152.166 ip4:100.25.230.100 ip4:52.6.78.230 ip4:52.6.81.149 ip4:52.6.17.79 ip4:52.4.34.132 ip4:3.224.68.51 ip4:3.95.46.116 ip4:3.92.40.162 ip4:3.86.119.141 ip4:35.164.222.189 ip4:52.39.217.30 ip4:52.42.48.186 ip4:52.35.219.37 include:8qlsfxkg7._spf._d.mim.ec ~all
ipv4:
54.84.71.166
ipv4:
54.85.157.140
ipv4:
54.85.181.203
ipv4:
54.85.185.66
ipv4:
54.85.26.5
ipv4:
54.85.39.4
ipv4:
100.26.6.215
ipv4:
54.226.141.130
ipv4:
34.225.152.166
ipv4:
100.25.230.100
ipv4:
52.6.78.230
ipv4:
52.6.81.149
ipv4:
52.6.17.79
ipv4:
52.4.34.132
ipv4:
3.224.68.51
ipv4:
3.95.46.116
ipv4:
3.92.40.162
ipv4:
3.86.119.141
ipv4:
35.164.222.189
ipv4:
52.39.217.30
ipv4:
52.42.48.186
ipv4:
52.35.219.37
include:8qlsfxkg7._spf._d.mim.ec
v=spf1 ip4:35.163.134.248 ip4:52.42.109.152 ip4:54.218.179.45 ip4:35.164.11.212 ip4:52.42.90.23 ip4:52.32.175.174 ip4:34.216.208.24 ip4:35.166.116.137 ip4:74.125.0.0/16 ip4:209.85.128.0/17 ip4:128.103.229.181 ip4:128.103.109.33 ip4:74.209.251.23 ip4:167.89.90.135 ip4:168.245.94.198 ip4:168.245.67.111 ip4:149.72.27.45 ip4:167.89.28.100 ip6:2001:4860:4864::/56 ip6:2404:6800:4864::/56 include:8qlsfxkg8._spf._d.mim.ec ~all
ipv4:
35.163.134.248
ipv4:
52.42.109.152
ipv4:
54.218.179.45
ipv4:
35.164.11.212
ipv4:
52.42.90.23
ipv4:
52.32.175.174
ipv4:
34.216.208.24
ipv4:
35.166.116.137
ipv4:
74.125.0.0/16
ipv4:
209.85.128.0/17
ipv4:
128.103.229.181
ipv4:
128.103.109.33
ipv4:
74.209.251.23
ipv4:
167.89.90.135
ipv4:
168.245.94.198
ipv4:
168.245.67.111
ipv4:
149.72.27.45
ipv4:
167.89.28.100
ipv6:
2001:4860:4864::/56
ipv6:
2404:6800:4864::/56
include:8qlsfxkg8._spf._d.mim.ec
v=spf1 ip6:2607:f8b0:4864::/56 ip6:2800:3f0:4864::/56 ip6:2a00:1450:4864::/56 ip6:2c0f:fb50:4864::/56 ~all
ipv6:
2607:f8b0:4864::/56
ipv6:
2800:3f0:4864::/56
ipv6:
2a00:1450:4864::/56
ipv6:
2c0f:fb50:4864::/56

Are the server addresses allowed to send e-mails?

In the SPF entry the mechanism 'a' has not been set.

Additionally authorized A-records?

In addition to the A-Records stored in the DNS, we could not find any other records authorized in the SPF-Record.

Are the registered mail servers allowed to send e-mails?

In the SPF entry the mechanism 'mx' has not been set

Additionally authorized MX records

We could not find any other records authorized in the SPF record besides the MX records stored in the DNS

Additionally authorized IPv4 addresses

No explicit IPv4 addresses in the SPF record have been authorised to send

Additionally authorized IPv6 addresses

No explicit IPv6 addresses in the SPF record have been authorised to send

Additional external SPF records

We could not find any other records authorized in SPF-Record

How is the sender informed?

The exp mechanism acts as a return to the sender if the IP address was not authorized to send and notify them. None was found.

PTR (obsolete mechanism)

The ptr mechanism is deprecated, slow and insecure and should not be used

PTR:

The ptr mechanism is deprecated, slow and insecure and should not be used

Authorize IP addresses with markers

When SPF is evaluated, macros can specifically authorize Ip addresses based on the request or connection of the user or client (RFC7208 )

E-Mail handling

How should the checkHost() function of the e-mail server handle the e-mail? (syntax )

Receiver address

analysis.ra-missing

Amount of reports

analysis.rp-missing

Report selection

analysis.rr-missing

Unknown mechanisms

No unknown mechanisms were found in the SPF record.

Recently performed SPF lookups

Server IP Address

We have determined the following IP address for the domain:

No domain specified

Reverse address

We have determined the following name for the server IP address:

151.101.2.133

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