SPF Check:
stf.jus.br

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 failed

Your SPF record check result
  •   SPF record found
  •   Syntax check: 5 Error
  •   Email Spoofing Protection: Poor
Summary of the SPF check

Does a valid SPF record exist?
An SPF record was found for the domain stf.jus.br.
The SPF record for stf.jus.br is not valid.
The syntax check resulted in a total of 5 errors.
of the email -Spoofing protection for this domain is not or not sufficiently provided.

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, 89 IP address(es) were authorized by the SPF record to send emails. 28 of these are not taken into account by the Mail Transfer Agent evaluation and are not authorized to send emails on behalf of the domain.

The SPF record analysis was performed on 15.06.2024 at 18:25:17 clock.

Lookup for the domain:
stf.jus.br
IP address to be checked:
no IP address specified

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Evaluation for the domain stf.jus.br 

Nameserverset:
ns-567.awsdns-06.net
ns-1990.awsdns-56.co.uk
ns-105.awsdns-13.com
ns-1363.awsdns-42.org
Determined SPF record:
Legitimated IP addresses:
IP Provider / ASN DNSBL-Check
52.101.194.12 MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
52.101.9.14 MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
52.101.194.3 MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
52.101.41.6 MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
52.101.42.13 MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
52.101.11.13 MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
52.101.11.2 MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
201.49.144.159 SUPREMO TRIBUNAL FEDERAL blacklist 
201.49.144.159 SUPREMO TRIBUNAL FEDERAL blacklist 
201.49.144.166 SUPREMO TRIBUNAL FEDERAL blacklist 
3.101.2.139 AMAZON-02 blacklist 
52.58.131.9 AMAZON-02 blacklist 
52.58.136.115 AMAZON-02 blacklist 
40.92.0.0/15
MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
40.107.0.0/16
MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
52.100.0.0/14
MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
104.47.0.0/17
MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
2a01:111:f400::/48
MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
2a01:111:f403::/49
MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
2a01:111:f403:8000::/51
MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
2a01:111:f403:c000::/51
MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
2a01:111:f403:f000::/52
MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
54.67.101.6 AMAZON-02 blacklist 
3.101.2.139 AMAZON-02 blacklist 
18.194.112.42 AMAZON-02 blacklist 
52.58.131.9 AMAZON-02 blacklist 
52.58.136.115 AMAZON-02 blacklist 
52.58.128.109 AMAZON-02 blacklist 
18.197.195.173 AMAZON-02 blacklist 
207.210.199.165 AS17378 blacklist 
54.215.254.223 AMAZON-02 blacklist 
184.178.75.213 RAPIDSCALE blacklist 
3.64.36.62 AMAZON-02 blacklist 
3.126.115.75 AMAZON-02 blacklist 
184.106.54.1 RACKSPACE blacklist 
184.106.54.2 RACKSPACE blacklist 
3.88.74.79 AMAZON-AES blacklist 
54.67.101.6 AMAZON-02 blacklist 
3.101.2.139 AMAZON-02 blacklist 
18.194.112.42 AMAZON-02 blacklist 
52.58.131.9 AMAZON-02 blacklist 
52.58.136.115 AMAZON-02 blacklist 
52.58.128.109 AMAZON-02 blacklist 
18.197.195.173 AMAZON-02 blacklist 
207.210.199.165 AS17378 blacklist 
54.215.254.223 AMAZON-02 blacklist 
184.178.75.213 RAPIDSCALE blacklist 
3.64.36.62 AMAZON-02 blacklist 
3.126.115.75 AMAZON-02 blacklist 
108.166.43.0/24
RACKSPACE blacklist 
146.20.86.8 RACKSPACE blacklist 
146.20.161.0/25
RACKSPACE blacklist 
161.47.34.7 RACKSPACE blacklist 
173.203.187.0/25
RACKSPACE blacklist 
184.106.54.0/25
RACKSPACE blacklist 
204.232.172.40 RACKSPACE blacklist 
103.151.192.0/23
AMAZON-02 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-02 blacklist 
198.245.81.0/24
SALESFORCE blacklist 
136.147.176.0/24
SALESFORCE blacklist 
13.111.0.0/16
SALESFORCE blacklist 
136.147.182.0/24
SALESFORCE blacklist 
136.147.135.0/24
SALESFORCE blacklist 
199.122.123.0/24
SALESFORCE blacklist 
52.28.63.81 AMAZON-02 blacklist 
175.41.215.51 AMAZON-02 blacklist 
64.79.155.192 SWITCH-LTD blacklist 
44.236.56.93 AMAZON-02 blacklist 
207.218.90.122 LVLT-3549 blacklist 
64.79.155.193 SWITCH-LTD blacklist 
18.216.232.154 AMAZON-02 blacklist 
54.213.20.246 AMAZON-02 blacklist 
35.161.32.253 AMAZON-02 blacklist 
3.129.120.190 AMAZON-02 blacklist 
44.238.220.251 AMAZON-02 blacklist 
52.58.216.183 AMAZON-02 blacklist 
52.59.143.3 AMAZON-02 blacklist 
35.167.93.243 AMAZON-02 blacklist 
18.157.243.190 AMAZON-02 blacklist 
136.179.50.206 SWITCH-LTD blacklist 
18.236.40.242 AMAZON-02 blacklist 
64.79.155.206 SWITCH-LTD blacklist 
64.79.155.205 SWITCH-LTD blacklist 
3.70.123.177 AMAZON-02 blacklist 
34.215.104.144 AMAZON-02 blacklist 
18.156.89.250 AMAZON-02 blacklist 
SPF-Syntax Check:
Analysis result of the SPF record for the domain: stf.jus.br

SPF record available?

We found an SPF record for the domain.

v=spf1

Additionally authorized A-records?

In addition to the A-records stored in the DNS, we were able to find further records authorized in the SPF-record

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

The mechanism 'mx' was set in the SPF entry. The following hosts are allowed to send

Additionally authorized IPv4 addresses

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

201.49.144.159
3.101.2.139
52.58.131.9
52.58.136.115

Additional external SPF records

We could find other records authorized in the SPF record

include:spf.protection.outlook.com
v=spf1 ip4:40.92.0.0/15 ip4:40.107.0.0/16 ip4:52.100.0.0/14 ip4:104.47.0.0/17 ip6:2a01:111:f400::/48 ip6:2a01:111:f403::/49 ip6:2a01:111:f403:8000::/51 ip6:2a01:111:f403:c000::/51 ip6:2a01:111:f403:f000::/52 -all
ipv4:
40.92.0.0/15
ipv4:
40.107.0.0/16
ipv4:
52.100.0.0/14
ipv4:
104.47.0.0/17
ipv6:
2a01:111:f400::/48
ipv6:
2a01:111:f403::/49
ipv6:
2a01:111:f403:8000::/51
ipv6:
2a01:111:f403:c000::/51
ipv6:
2a01:111:f403:f000::/52
include:spf.rpost.net
v=spf1 ip4:54.67.101.6 ip4:3.101.2.139 ip4:18.194.112.42 ip4:52.58.131.9 ip4:52.58.136.115 ip4:52.58.128.109 ip4:18.197.195.173 ip4:207.210.199.165 ip4:54.215.254.223 ip4:184.178.75.213 ip4:3.64.36.62 ip4:3.126.115.75 ~all
ipv4:
54.67.101.6
ipv4:
3.101.2.139
ipv4:
18.194.112.42
ipv4:
52.58.131.9
ipv4:
52.58.136.115
ipv4:
52.58.128.109
ipv4:
18.197.195.173
ipv4:
207.210.199.165
ipv4:
54.215.254.223
ipv4:
184.178.75.213
ipv4:
3.64.36.62
ipv4:
3.126.115.75
include:rpost.com
v=spf1 mx ip4:3.88.74.79 include:spf.rpost.net include:emailsrvr.com include:mail.zendesk.com include:aspmx.pardot.com a:zgateway.zuora.com ~all
mx:
mx1.emailsrvr.com
mx:
mx2.emailsrvr.com
ipv4:
3.88.74.79
include:spf.rpost.net (Domain has already been resolved once)
include:emailsrvr.com
v=spf1 ip4:108.166.43.0/24 ip4:146.20.86.8 ip4:146.20.161.0/25 ip4:161.47.34.7 ip4:173.203.187.0/25 ip4:184.106.54.0/25 ip4:204.232.172.40 ~all
ipv4:
108.166.43.0/24
ipv4:
146.20.86.8
ipv4:
146.20.161.0/25
ipv4:
161.47.34.7
ipv4:
173.203.187.0/25
ipv4:
184.106.54.0/25
ipv4:
204.232.172.40
include:mail.zendesk.com
v=spf1 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 ~all
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
include:aspmx.pardot.com
v=spf1 include:et._spf.pardot.com -all
include:et._spf.pardot.com
v=spf1 ip4:198.245.81.0/24 ip4:136.147.176.0/24 ip4:13.111.0.0/16 ip4:136.147.182.0/24 ip4:136.147.135.0/24 ip4:199.122.123.0/24 -all
ipv4:
198.245.81.0/24
ipv4:
136.147.176.0/24
ipv4:
13.111.0.0/16
ipv4:
136.147.182.0/24
ipv4:
136.147.135.0/24
ipv4:
199.122.123.0/24
unknown:

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 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:

ec2-54-207-129-115.sa-east-1.compute.amazonaws.com

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