SPF Check:
_s00430413.autospf.email

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
Warning: Compliance breach for email deliverability & security

The domain _s00430413.autospf.email does not fulfil the requirements for optimal deliverability to Google, Yahoo and other email service providers.

Mandatory IT baseline protection measures for email security are not fulfilled. There are risks of email misuse.

Summary of the SPF check

Does a valid SPF record exist?
An SPF record was found for the domain _s00430413.autospf.email.
The SPF record for _s00430413.autospf.email 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, 155 IP address(es) were authorized by the SPF record to send emails.

The SPF record analysis was performed on 17.02.2026 at 01:15:37 clock.

Lookup for the domain:
_s00430413.autospf.email
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.
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Evaluation for the domain _s00430413.autospf.email 

Nameserverset:
henry.ns.cloudflare.com
laura.ns.cloudflare.com
Determined SPF record:
Legitimated IP addresses:
IP Provider / ASN DNSBL-Check
3.99.6.92 Amazon.com, Inc. blacklist 
69.72.41.2 Mailgun Technologies Inc. blacklist 
52.42.20.3 Amazon.com, Inc. blacklist 
52.101.9.0 Microsoft Corporation blacklist 
52.101.9.5 Microsoft Corporation blacklist 
62.23.85.10 COLT Technology Services Group Limited blacklist 
18.9.1.0/24
Massachusetts Institute of Technology blacklist 
54.88.39.81 Amazon.com, Inc. blacklist 
69.72.41.28 Mailgun Technologies Inc. blacklist 
52.101.9.12 Microsoft Corporation blacklist 
207.54.75.14 Cisco Systems Ironport Division blacklist 
207.54.75.15 Cisco Systems Ironport Division blacklist 
207.54.75.16 Cisco Systems Ironport Division blacklist 
142.0.177.24 BroadbandONE, LLC blacklist 
142.0.187.58 Rackspace Hosting blacklist 
18.7.16.0/24
Massachusetts Institute of Technology blacklist 
18.7.21.0/24
Massachusetts Institute of Technology blacklist 
18.7.34.0/24
Massachusetts Institute of Technology blacklist 
18.7.62.0/24
Massachusetts Institute of Technology blacklist 
18.7.68.0/24
Massachusetts Institute of Technology blacklist 
18.7.71.0/24
Massachusetts Institute of Technology blacklist 
18.9.21.0/24
Massachusetts Institute of Technology blacklist 
18.9.25.0/24
Massachusetts Institute of Technology blacklist 
18.9.28.0/24
Massachusetts Institute of Technology blacklist 
74.112.64.38 Amazon.com, Inc. blacklist 
129.41.172.4 Amazon.com, Inc. blacklist 
64.128.67.16 Level 3 Parent, LLC blacklist 
64.128.67.20 Level 3 Parent, LLC blacklist 
72.55.140.81 Leaseweb Canada Inc. blacklist 
69.72.32.253 Mailgun Technologies Inc. blacklist 
69.72.47.188 Mailgun Technologies Inc. blacklist 
69.72.34.120 Mailgun Technologies Inc. blacklist 
69.72.45.120 Mailgun Technologies Inc. blacklist 
12.228.6.215 Florida Technology Managed Services, Inc. blacklist 
52.45.50.190 Amazon.com, Inc. blacklist 
52.31.29.196 Amazon.com, Inc. blacklist 
52.60.142.64 Amazon.com, Inc. blacklist 
13.237.94.13 Amazon.com, Inc. blacklist 
54.66.240.63 Amazon.com, Inc. blacklist 
40.92.0.0/15
Microsoft Corporation blacklist 
52.5.134.202 Amazon.com, Inc. blacklist 
207.54.83.136 Cisco Systems Ironport Division blacklist 
207.54.83.137 Cisco Systems Ironport Division blacklist 
207.54.83.138 Cisco Systems Ironport Division blacklist 
69.20.119.219 Rackspace Hosting blacklist 
63.32.240.193 Amazon.com, Inc. blacklist 
52.19.113.120 Amazon.com, Inc. blacklist 
74.125.0.0/16
Google LLC blacklist 
139.60.0.0/22
Amazon.com, Inc. blacklist 
74.112.65.118 Amazon.com, Inc. blacklist 
208.85.54.226 Amazon.com, Inc. blacklist 
129.41.172.69 Amazon.com, Inc. blacklist 
165.192.56.56 - blacklist 
13.111.0.0/16
Salesforce.com, Inc. blacklist 
143.55.237.88 Mailjet SAS blacklist 
167.89.0.0/17
SendGrid, Inc. blacklist 
50.31.32.0/19
SendGrid, Inc. blacklist 
198.21.0.0/21
SendGrid, Inc. blacklist 
149.72.0.0/16
Amazon.com, Inc. blacklist 
52.76.190.252 Amazon.com, Inc. blacklist 
3.218.253.173 Amazon.com, Inc. blacklist 
35.160.78.215 Amazon.com, Inc. blacklist 
54.195.228.99 Amazon.com, Inc. blacklist 
40.172.14.241 Amazon.com, Inc. blacklist 
40.107.0.0/16
Microsoft Corporation blacklist 
52.100.0.0/15
Microsoft Corporation blacklist 
52.102.0.0/16
Microsoft Corporation blacklist 
52.103.0.0/17
Microsoft Corporation blacklist 
104.47.0.0/17
Microsoft Corporation blacklist 
52.101.194.12 Microsoft Corporation blacklist 
154.62.6.0/24
PeopleFluent blacklist 
34.251.228.195 Amazon.com, Inc. blacklist 
142.0.176.0/20
BroadbandONE, LLC blacklist 
69.48.230.0/25
BroadbandONE, LLC blacklist 
20.96.12.43/32
Microsoft Corporation blacklist 
20.1.130.13/32
Microsoft Corporation blacklist 
37.59.249.0/24
OVH SAS blacklist 
69.25.199.0/24
Unitas Global blacklist 
87.253.236.214 Mailjet SAS blacklist 
148.105.0.0/16
MailChimp blacklist 
178.33.111.144 OVH SAS blacklist 
159.183.195.16 SendGrid, Inc. blacklist 
143.55.237.127 Mailjet SAS blacklist 
143.55.237.162 Mailjet SAS blacklist 
143.55.237.120 Mailjet SAS blacklist 
185.12.80.0/22
- blacklist 
216.198.0.0/18
Amazon.com, Inc. blacklist 
168.245.0.0/17
SendGrid, Inc. blacklist 
159.183.0.0/16
SendGrid, Inc. blacklist 
13.215.187.237 Amazon.com, Inc. blacklist 
40.172.175.158 Amazon.com, Inc. blacklist 
20.1.128.197/32
Microsoft Corporation blacklist 
20.10.24.226/32
Microsoft Corporation blacklist 
209.85.128.0/17
Google LLC blacklist 
37.59.69.128/25
OVH SAS blacklist 
75.98.95.161/27
Unitas Global blacklist 
87.253.232.0/21
- blacklist 
96.43.144.64/31
Salesforce.com, Inc. blacklist 
96.43.148.64/31
Salesforce.com, Inc. blacklist 
165.193.101.141 CenturyLink Communications, LLC blacklist 
165.193.101.142 CenturyLink Communications, LLC blacklist 
198.187.196.100 Touchnet Information Systems blacklist 
198.187.196.130 Touchnet Information Systems blacklist 
198.245.81.0/24
Salesforce.com, Inc. blacklist 
159.135.226.248 Mailgun Technologies Inc. blacklist 
159.135.233.165 Mailgun Technologies Inc. blacklist 
12.228.6.215/32
Florida Technology Managed Services, Inc. blacklist 
208.117.48.0/20
SendGrid, Inc. blacklist 
198.37.144.0/20
SendGrid, Inc. blacklist 
134.128.64.0/19
SendGrid, Inc. blacklist 
134.128.96.0/19
SendGrid, Inc. blacklist 
69.20.119.216/29
Rackspace Hosting blacklist 
76.12.109.192/27
Ntirety, Inc. blacklist 
67.59.141.128/28
Ntirety, Inc. blacklist 
70.42.227.151/32
Unitas Global blacklist 
70.42.227.152/32
Unitas Global blacklist 
20.114.186.35/32
Microsoft Corporation blacklist 
139.146.160.0/25
LightEdge Solutions blacklist 
74.62.122.128/25
Charter Communications Inc blacklist 
136.147.176.0/24
Salesforce.com, Inc. blacklist 
136.147.182.0/24
Salesforce.com, Inc. blacklist 
136.147.135.0/24
Salesforce.com, Inc. blacklist 
199.122.123.0/24
Salesforce.com, Inc. blacklist 
103.151.192.0/23
Amazon.com, Inc. blacklist 
188.172.128.0/20
- blacklist 
192.161.144.0/20
- blacklist 
192.254.112.0/20
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 
209.41.176.224/28
Ntirety, Inc. blacklist 
20.119.174.191/32
Microsoft Corporation blacklist 
20.230.106.230/32
Microsoft Corporation blacklist 
20.119.207.133/32
Microsoft Corporation blacklist 
178.33.137.208/28
OVH SAS blacklist 
204.232.162.112/28
Rackspace Hosting blacklist 
204.232.180.112/29
Rackspace Hosting blacklist 
204.232.180.128/29
Rackspace Hosting blacklist 
2800:3f0:4000::/36
Google LLC blacklist 
139.146.146.128/25
LightEdge Solutions blacklist 
2a01:111:f400::/48
Microsoft Corporation blacklist 
2a01:111:f403::/49
Microsoft Corporation blacklist 
2001:4860:4000::/36
Google LLC blacklist 
2404:6800:4000::/36
Google LLC blacklist 
2607:f8b0:4000::/36
Google LLC blacklist 
2a00:1450:4000::/36
Google LLC blacklist 
2c0f:fb50:4000::/36
Google LLC blacklist 
2a01:111:f403:f903:: Microsoft Corporation blacklist 
2a01:111:f403:c927:: Microsoft Corporation blacklist 
2a01:111:f403:f805:: Microsoft Corporation blacklist 
2a01:111:f403:f807:: Microsoft Corporation blacklist 
2a01:111:f403:8000::/51
Microsoft Corporation blacklist 
2a01:111:f403:c000::/51
Microsoft Corporation blacklist 
2a01:111:f403:f000::/52
Microsoft Corporation blacklist 
SPF-Syntax Check:
Analysis result of the SPF record for the domain: _s00430413.autospf.email

SPF record available?

We found an SPF record for the domain.

v=spf1

Additionally authorized IPv4 addresses

Explicit IPv4 addresses in the SPF record have been authorized to send

3.99.6.92
69.72.41.2
52.42.20.3
52.101.9.0
52.101.9.5
62.23.85.10
18.9.1.0/24
54.88.39.81
69.72.41.28
52.101.9.12
207.54.75.14
207.54.75.15
207.54.75.16
142.0.177.24
142.0.187.58
18.7.16.0/24
18.7.21.0/24
18.7.34.0/24
18.7.62.0/24
18.7.68.0/24
18.7.71.0/24
18.9.21.0/24
18.9.25.0/24
18.9.28.0/24

Additional external SPF records

We could find other records authorized in the SPF record

include:_s004304130.autospf.email
v=spf1 ip4:74.112.64.38 ip4:129.41.172.4 ip4:64.128.67.16 ip4:64.128.67.20 ip4:72.55.140.81 ip4:69.72.32.253 ip4:69.72.47.188 ip4:69.72.34.120 ip4:69.72.45.120 ip4:12.228.6.215 ip4:52.45.50.190 ip4:52.31.29.196 ip4:52.60.142.64 ip4:13.237.94.13 ip4:54.66.240.63 ip4:40.92.0.0/15 ip4:52.5.134.202 ip4:207.54.83.136 ip4:207.54.83.137 ip4:207.54.83.138 ip4:69.20.119.219 ip4:63.32.240.193 ip4:52.19.113.120 include:_s004304131.autospf.email -all
ipv4:
74.112.64.38
ipv4:
129.41.172.4
ipv4:
64.128.67.16
ipv4:
64.128.67.20
ipv4:
72.55.140.81
ipv4:
69.72.32.253
ipv4:
69.72.47.188
ipv4:
69.72.34.120
ipv4:
69.72.45.120
ipv4:
12.228.6.215
ipv4:
52.45.50.190
ipv4:
52.31.29.196
ipv4:
52.60.142.64
ipv4:
13.237.94.13
ipv4:
54.66.240.63
ipv4:
40.92.0.0/15
ipv4:
52.5.134.202
ipv4:
207.54.83.136
ipv4:
207.54.83.137
ipv4:
207.54.83.138
ipv4:
69.20.119.219
ipv4:
63.32.240.193
ipv4:
52.19.113.120
include:_s004304131.autospf.email
v=spf1 ip4:74.125.0.0/16 ip4:139.60.0.0/22 ip4:74.112.65.118 ip4:208.85.54.226 ip4:129.41.172.69 ip4:165.192.56.56 ip4:13.111.0.0/16 ip4:143.55.237.88 ip4:167.89.0.0/17 ip4:50.31.32.0/19 ip4:198.21.0.0/21 ip4:149.72.0.0/16 ip4:52.76.190.252 ip4:3.218.253.173 ip4:35.160.78.215 ip4:54.195.228.99 ip4:40.172.14.241 ip4:40.107.0.0/16 ip4:52.100.0.0/15 ip4:52.102.0.0/16 ip4:52.103.0.0/17 ip4:104.47.0.0/17 include:_s004304132.autospf.email -all
ipv4:
74.125.0.0/16
ipv4:
139.60.0.0/22
ipv4:
74.112.65.118
ipv4:
208.85.54.226
ipv4:
129.41.172.69
ipv4:
165.192.56.56
ipv4:
13.111.0.0/16
ipv4:
143.55.237.88
ipv4:
167.89.0.0/17
ipv4:
50.31.32.0/19
ipv4:
198.21.0.0/21
ipv4:
149.72.0.0/16
ipv4:
52.76.190.252
ipv4:
3.218.253.173
ipv4:
35.160.78.215
ipv4:
54.195.228.99
ipv4:
40.172.14.241
ipv4:
40.107.0.0/16
ipv4:
52.100.0.0/15
ipv4:
52.102.0.0/16
ipv4:
52.103.0.0/17
ipv4:
104.47.0.0/17
include:_s004304132.autospf.email
v=spf1 ip4:52.101.194.12 ip4:154.62.6.0/24 ip4:34.251.228.195 ip4:142.0.176.0/20 ip4:69.48.230.0/25 ip4:20.96.12.43/32 ip4:20.1.130.13/32 ip4:37.59.249.0/24 ip4:69.25.199.0/24 ip4:87.253.236.214 ip4:148.105.0.0/16 ip4:178.33.111.144 ip4:159.183.195.16 ip4:143.55.237.127 ip4:143.55.237.162 ip4:143.55.237.120 ip4:185.12.80.0/22 ip4:216.198.0.0/18 ip4:168.245.0.0/17 ip4:159.183.0.0/16 ip4:13.215.187.237 include:_s004304133.autospf.email -all
ipv4:
52.101.194.12
ipv4:
154.62.6.0/24
ipv4:
34.251.228.195
ipv4:
142.0.176.0/20
ipv4:
69.48.230.0/25
ipv4:
20.96.12.43/32
ipv4:
20.1.130.13/32
ipv4:
37.59.249.0/24
ipv4:
69.25.199.0/24
ipv4:
87.253.236.214
ipv4:
148.105.0.0/16
ipv4:
178.33.111.144
ipv4:
159.183.195.16
ipv4:
143.55.237.127
ipv4:
143.55.237.162
ipv4:
143.55.237.120
ipv4:
185.12.80.0/22
ipv4:
216.198.0.0/18
ipv4:
168.245.0.0/17
ipv4:
159.183.0.0/16
ipv4:
13.215.187.237
include:_s004304133.autospf.email
v=spf1 ip4:40.172.175.158 ip4:20.1.128.197/32 ip4:20.10.24.226/32 ip4:209.85.128.0/17 ip4:37.59.69.128/25 ip4:75.98.95.161/27 ip4:87.253.232.0/21 ip4:96.43.144.64/31 ip4:96.43.148.64/31 ip4:165.193.101.141 ip4:165.193.101.142 ip4:198.187.196.100 ip4:198.187.196.130 ip4:198.245.81.0/24 ip4:159.135.226.248 ip4:159.135.233.165 ip4:12.228.6.215/32 ip4:208.117.48.0/20 ip4:198.37.144.0/20 ip4:134.128.64.0/19 include:_s004304134.autospf.email -all
ipv4:
40.172.175.158
ipv4:
20.1.128.197/32
ipv4:
20.10.24.226/32
ipv4:
209.85.128.0/17
ipv4:
37.59.69.128/25
ipv4:
75.98.95.161/27
ipv4:
87.253.232.0/21
ipv4:
96.43.144.64/31
ipv4:
96.43.148.64/31
ipv4:
165.193.101.141
ipv4:
165.193.101.142
ipv4:
198.187.196.100
ipv4:
198.187.196.130
ipv4:
198.245.81.0/24
ipv4:
159.135.226.248
ipv4:
159.135.233.165
ipv4:
12.228.6.215/32
ipv4:
208.117.48.0/20
ipv4:
198.37.144.0/20
ipv4:
134.128.64.0/19
include:_s004304134.autospf.email
v=spf1 ip4:134.128.96.0/19 ip4:69.20.119.216/29 ip4:76.12.109.192/27 ip4:67.59.141.128/28 ip4:70.42.227.151/32 ip4:70.42.227.152/32 ip4:20.114.186.35/32 ip4:139.146.160.0/25 ip4:74.62.122.128/25 ip4:136.147.176.0/24 ip4:136.147.182.0/24 ip4:136.147.135.0/24 ip4:199.122.123.0/24 ip4:103.151.192.0/23 ip4:188.172.128.0/20 ip4:192.161.144.0/20 ip4:192.254.112.0/20 ip4:223.165.113.0/24 ip4:223.165.115.0/24 include:_s004304135.autospf.email -all
ipv4:
134.128.96.0/19
ipv4:
69.20.119.216/29
ipv4:
76.12.109.192/27
ipv4:
67.59.141.128/28
ipv4:
70.42.227.151/32
ipv4:
70.42.227.152/32
ipv4:
20.114.186.35/32
ipv4:
139.146.160.0/25
ipv4:
74.62.122.128/25
ipv4:
136.147.176.0/24
ipv4:
136.147.182.0/24
ipv4:
136.147.135.0/24
ipv4:
199.122.123.0/24
ipv4:
103.151.192.0/23
ipv4:
188.172.128.0/20
ipv4:
192.161.144.0/20
ipv4:
192.254.112.0/20
ipv4:
223.165.113.0/24
ipv4:
223.165.115.0/24
include:_s004304135.autospf.email
v=spf1 ip4:223.165.118.0/23 ip4:223.165.120.0/23 ip4:209.41.176.224/28 ip4:20.119.174.191/32 ip4:20.230.106.230/32 ip4:20.119.207.133/32 ip4:178.33.137.208/28 ip4:204.232.162.112/28 ip4:204.232.180.112/29 ip4:204.232.180.128/29 ip6:2800:3f0:4000::/36 ip4:139.146.146.128/25 ip6:2a01:111:f400::/48 ip6:2a01:111:f403::/49 ip6:2001:4860:4000::/36 ip6:2404:6800:4000::/36 ip6:2607:f8b0:4000::/36 include:_s004304136.autospf.email -all
ipv4:
223.165.118.0/23
ipv4:
223.165.120.0/23
ipv4:
209.41.176.224/28
ipv4:
20.119.174.191/32
ipv4:
20.230.106.230/32
ipv4:
20.119.207.133/32
ipv4:
178.33.137.208/28
ipv4:
204.232.162.112/28
ipv4:
204.232.180.112/29
ipv4:
204.232.180.128/29
ipv4:
139.146.146.128/25
ipv6:
2800:3f0:4000::/36
ipv6:
2a01:111:f400::/48
ipv6:
2a01:111:f403::/49
ipv6:
2001:4860:4000::/36
ipv6:
2404:6800:4000::/36
ipv6:
2607:f8b0:4000::/36
include:_s004304136.autospf.email
v=spf1 ip6:2a00:1450:4000::/36 ip6:2c0f:fb50:4000::/36 ip6:2a01:111:f403:f903:: ip6:2a01:111:f403:c927:: ip6:2a01:111:f403:f805:: ip6:2a01:111:f403:f807:: ip6:2a01:111:f403:8000::/51 ip6:2a01:111:f403:c000::/51 ip6:2a01:111:f403:f000::/52 exists:%{i}._spf.mta.salesforce.com -all
ipv6:
2a00:1450:4000::/36
ipv6:
2c0f:fb50:4000::/36
ipv6:
2a01:111:f403:f903::
ipv6:
2a01:111:f403:c927::
ipv6:
2a01:111:f403:f805::
ipv6:
2a01:111:f403:f807::
ipv6:
2a01:111:f403:8000::/51
ipv6:
2a01:111:f403:c000::/51
ipv6:
2a01:111:f403:f000::/52

E-Mail handling

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

-all
Fail (non-compliant e-mails are rejected)

Will be forwarded to another SPF record?

There is no reference to any other SPF record

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 IPv6 addresses

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

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 )

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:

No PTR record found

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