SPF Check:
integrity-software.net

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
Summary of the SPF check

Does a valid SPF record exist?
An SPF record was found for the domain integrity-software.net.
The SPF record for integrity-software.net 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, 84 IP address(es) were authorized by the SPF record to send emails.

The SPF record analysis was performed on 29.03.2024 at 08:33:41 clock.

Lookup for the domain:
integrity-software.net
IP address to be checked:
no IP address specified
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Evaluation for the domain integrity-software.net 

Nameserverset:
ns1.tierra.net
ns2.tierra.net
ns1.domaindiscover.com
ns2.domaindiscover.com
Determined SPF record:
Legitimated IP addresses:
IP Provider / ASN DNSBL-Check
195.130.217.241 Mimecast Services Limited blacklist 
91.220.42.201 Mimecast Services Limited blacklist 
91.220.42.241 Mimecast Services Limited blacklist 
91.220.42.211 Mimecast Services Limited blacklist 
195.130.217.211 Mimecast Services Limited blacklist 
195.130.217.201 Mimecast Services Limited blacklist 
91.220.42.211 Mimecast Services Limited blacklist 
195.130.217.201 Mimecast Services Limited blacklist 
195.130.217.211 Mimecast Services Limited blacklist 
91.220.42.241 Mimecast Services Limited blacklist 
91.220.42.201 Mimecast Services Limited blacklist 
195.130.217.241 Mimecast Services Limited blacklist 
195.130.217.0/24
Mimecast Services Limited blacklist 
91.220.42.0/24
Mimecast Services Limited blacklist 
146.101.78.0/24
TELSTRAEUROPELTD-BACKBONE Telstra Europe Ltd blacklist 
207.82.80.0/24
Mimecast Services Limited blacklist 
213.167.81.0/25
Mimecast Services Limited blacklist 
193.7.207.0/25
Mimecast Services Limited blacklist 
213.167.75.0/25
Mimecast Services Limited blacklist 
185.58.85.0/24
Mimecast Services Limited blacklist 
185.58.86.0/24
Mimecast Services Limited blacklist 
193.7.206.0/25
Mimecast Services Limited blacklist 
147.28.36.0/24
AMAZON-02 blacklist 
207.211.31.0/25
NAVISITE-EAST-2 blacklist 
205.139.110.0/24
MIMECAST blacklist 
216.205.24.0/24
MIMECAST blacklist 
170.10.129.0/24
MIMECAST blacklist 
63.128.21.0/24
MIMECAST blacklist 
170.10.133.0/24
MIMECAST blacklist 
185.58.84.93/32
Mimecast Services Limited blacklist 
207.211.41.113/32
NAVISITE-EAST-2 blacklist 
207.211.30.64/26
MIMECAST blacklist 
207.211.30.128/25
MIMECAST blacklist 
216.145.221.0/24
AMAZON-AES blacklist 
170.10.128.0/24
MIMECAST blacklist 
41.74.192.0/22
MimecastSA blacklist 
41.74.200.0/23
MimecastSA blacklist 
41.74.196.0/22
MimecastSA blacklist 
41.74.204.0/23
MimecastSA blacklist 
41.74.206.0/24
MimecastSA blacklist 
51.163.158.0/24
Mimecast Services Limited blacklist 
194.104.109.0/24
Mimecast Services Limited blacklist 
194.104.111.0/24
Mimecast Services Limited blacklist 
194.104.110.21/32
Mimecast Services Limited blacklist 
194.104.110.240/28
Mimecast Services Limited blacklist 
62.140.10.21/32
Mimecast Services Limited blacklist 
62.140.7.0/24
Mimecast Services Limited blacklist 
194.104.108.240/29
Mimecast Services Limited blacklist 
194.104.108.21/32
Mimecast Services Limited blacklist 
103.13.69.0/24
Mimecast Australia Pty Ltd blacklist 
124.47.150.0/24
Macquarie Telecom blacklist 
124.47.189.0/24
Macquarie Telecom blacklist 
103.96.23.0/24
Mimecast Australia Pty Ltd blacklist 
103.96.21.0/24
Mimecast Australia Pty Ltd blacklist 
180.189.28.0/24
Mimecast Australia Pty Ltd blacklist 
216.145.217.0/24
AMAZON-02 blacklist 
103.96.22.96/28
Mimecast Australia Pty Ltd blacklist 
103.96.22.22/32
Mimecast Australia Pty Ltd blacklist 
103.96.20.22/32
Mimecast Australia Pty Ltd blacklist 
103.96.20.96/28
Mimecast Australia Pty Ltd 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 
109.73.117.80/28
Cyberfort Limited blacklist 
109.73.126.32/28
Cyberfort Limited 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 
103.28.42.0/24
CAMPAIGN MONITOR PTY LTD blacklist 
146.88.28.0/24
CAMPAIGN MONITOR PTY LTD blacklist 
163.47.180.0/22
AMAZON-AES blacklist 
203.55.21.0/24
CAMPAIGN MONITOR PTY LTD blacklist 
204.75.142.0/24
CAMPAIGN MONITOR PTY LTD blacklist 
27.126.146.0/24
CAMPAIGN MONITOR PTY LTD blacklist 
74.91.92.160 MOZGROUP-SMTP blacklist 
52.189.193.91 MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
SPF-Syntax Check:
Analysis result of the SPF record for the domain: integrity-software.net

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

52.189.193.91

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

eu-smtp-inbound-1.mimecast.com
eu-smtp-inbound-1.mimecast.com
eu-smtp-inbound-1.mimecast.com
eu-smtp-inbound-1.mimecast.com
eu-smtp-inbound-1.mimecast.com
eu-smtp-inbound-1.mimecast.com
eu-smtp-inbound-2.mimecast.com
eu-smtp-inbound-2.mimecast.com
eu-smtp-inbound-2.mimecast.com
eu-smtp-inbound-2.mimecast.com
eu-smtp-inbound-2.mimecast.com
eu-smtp-inbound-2.mimecast.com

Additionally authorized IPv4 addresses

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

109.73.117.80/28
109.73.126.32/28
103.151.192.0/23
185.12.80.0/22
188.172.128.0/20
192.161.144.0/20
216.198.0.0/18
103.28.42.0/24
146.88.28.0/24
163.47.180.0/22
203.55.21.0/24
204.75.142.0/24
27.126.146.0/24
74.91.92.160

Additional external SPF records

We could find other records authorized in the SPF record

include:_netblocks.mimecast.com
v=spf1 include:eu._netblocks.mimecast.com include:us._netblocks.mimecast.com include:za._netblocks.mimecast.com include:de._netblocks.mimecast.com include:au._netblocks.mimecast.com ~all
include:eu._netblocks.mimecast.com
v=spf1 ip4:195.130.217.0/24 ip4:91.220.42.0/24 ip4:146.101.78.0/24 ip4:207.82.80.0/24 ip4:213.167.81.0/25 ip4:193.7.207.0/25 ip4:213.167.75.0/25 ip4:185.58.85.0/24 ip4:185.58.86.0/24 ip4:193.7.206.0/25 ip4:147.28.36.0/24 ~all
ipv4:
195.130.217.0/24
ipv4:
91.220.42.0/24
ipv4:
146.101.78.0/24
ipv4:
207.82.80.0/24
ipv4:
213.167.81.0/25
ipv4:
193.7.207.0/25
ipv4:
213.167.75.0/25
ipv4:
185.58.85.0/24
ipv4:
185.58.86.0/24
ipv4:
193.7.206.0/25
ipv4:
147.28.36.0/24
include:us._netblocks.mimecast.com
v=spf1 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 ip4:185.58.84.93/32 ip4:207.211.41.113/32 ip4:207.211.30.64/26 ip4:207.211.30.128/25 ip4:216.145.221.0/24 ip4:170.10.128.0/24 ~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:
185.58.84.93/32
ipv4:
207.211.41.113/32
ipv4:
207.211.30.64/26
ipv4:
207.211.30.128/25
ipv4:
216.145.221.0/24
ipv4:
170.10.128.0/24
include:za._netblocks.mimecast.com
v=spf1 ip4:41.74.192.0/22 ip4:41.74.200.0/23 ip4:41.74.196.0/22 ip4:41.74.204.0/23 ip4:41.74.206.0/24 ~all
ipv4:
41.74.192.0/22
ipv4:
41.74.200.0/23
ipv4:
41.74.196.0/22
ipv4:
41.74.204.0/23
ipv4:
41.74.206.0/24
include:de._netblocks.mimecast.com
v=spf1 ip4:51.163.158.0/24 ip4:194.104.109.0/24 ip4:194.104.111.0/24 ip4:194.104.110.21/32 ip4:194.104.110.240/28 ip4:62.140.10.21/32 ip4:62.140.7.0/24 ip4:194.104.108.240/29 ip4:194.104.108.21/32 ~all
ipv4:
51.163.158.0/24
ipv4:
194.104.109.0/24
ipv4:
194.104.111.0/24
ipv4:
194.104.110.21/32
ipv4:
194.104.110.240/28
ipv4:
62.140.10.21/32
ipv4:
62.140.7.0/24
ipv4:
194.104.108.240/29
ipv4:
194.104.108.21/32
include:au._netblocks.mimecast.com
v=spf1 ip4:103.13.69.0/24 ip4:124.47.150.0/24 ip4:124.47.189.0/24 ip4:103.96.23.0/24 ip4:103.96.21.0/24 ip4:180.189.28.0/24 ip4:216.145.217.0/24 ip4:103.96.22.96/28 ip4:103.96.22.22/32 ip4:103.96.20.22/32 ip4:103.96.20.96/28 ~all
ipv4:
103.13.69.0/24
ipv4:
124.47.150.0/24
ipv4:
124.47.189.0/24
ipv4:
103.96.23.0/24
ipv4:
103.96.21.0/24
ipv4:
180.189.28.0/24
ipv4:
216.145.217.0/24
ipv4:
103.96.22.96/28
ipv4:
103.96.22.22/32
ipv4:
103.96.20.22/32
ipv4:
103.96.20.96/28
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

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:

any-in-2015.1e100.net

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