Authentication Records Check for

steamcommunity.com

Instant checks for DMARC, SPF, and BIMI with clear, actionable guidance.

DMARC SPF BIMI

All data displayed is public and provided by the DNS system. Use of this website is subject to our Terms of Service.

Last checked about 9 hours ago

0 out of 100
Very Good

Domain Health Score

Your domain has strong email authentication. A few improvements can get you to a perfect score.

SPF
Sender Policy Framework
30 / 30
DMARC
Domain-based Message Authentication
50 / 50
BIMI
Brand Indicators for Message Identification
0 / 20
0

DMARC Check Results

50 / 50 points

Score Breakdown

DMARC record published
+10
Syntax valid
+5
Reject policy (maximum protection)
+20
Aggregate reporting (rua) configured and verified
+10
Forensic reporting (ruf) configured
+5

DMARC Check Passed: Properly Configured

DMARC record is valid and configured correctly.

_dmarc.steamcommunity.com TXT Entry:

v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; pct=100; sp=reject; adkim=s; aspf=s; fo=1;

Policy (p)

reject

DKIM Alignment (adkim)

Strict (s)

SPF Alignment (aspf)

Strict (s)

Understanding Alignment Modes

DKIM Alignment (adkim)

Strict mode: The DKIM signature's domain must exactly match the "From" header domain.

SPF Alignment (aspf)

Strict mode: The SPF "Return-Path" domain must exactly match the "From" header domain.

Note: When alignment parameters are not specified, DMARC defaults to relaxed mode for both DKIM and SPF alignment.

Reporting (RUA/RUF)

Aggregate Reports

Configured
[email protected]
External Domain Verification
[email protected]

Verification successful

Learn more about aggregate reports →

Forensic Reports

Configured
[email protected]
External Domain Verification
[email protected]

Verification successful

Learn more about forensic reports →

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You can add our monitoring system alongside your existing setup. DMARC supports multiple mailto: addresses, giving you additional visibility and backup reporting.

  • Automated DMARC report processing every 5 minutes
  • Clear insights and actionable recommendations
  • Track all sending sources and authentication results
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0

BIMI Check (default selector)

0 / 20 points

Score Breakdown

BIMI record published (optional)
0 / 5

No BIMI Record Found

Publish a TXT record at default._bimi.steamcommunity.com with v=BIMI1, logo URL (l=) and optional verified mark certificate (a=).

Create BIMI Record for steamcommunity.com
0

SPF Record Check Results

30 / 30 points

Score Breakdown

SPF record published
+10
Syntax valid
+5
Hard fail policy (-all)
+10
No configuration warnings
+5

SPF record is valid.

steamcommunity.com TXT SPF Entry:

v=spf1 mx include:_netblocks.mimecast.com -all

Syntax Check

OK

DNS Lookup Count

10 / 10 max

Close to RFC limit!

Root-level mechanisms requiring DNS queries: 2.

Void Lookups

0 / 2 max

Default Policy

-all

Fail: Reject emails from unauthorized servers (recommended for production)

All Authorized IP Addresses

Grouped by DNS record source (includes and sub-includes)

include:eu._netblocks.mimecast.com
195.130.217.0/24
91.220.42.0/24
146.101.78.0/24
207.82.80.0/24
213.167.81.0/25
193.7.207.0/25
213.167.75.0/25
185.58.85.0/24
185.58.86.0/24
193.7.206.0/25
147.28.36.0/24
include:us._netblocks.mimecast.com
207.211.31.0/25
205.139.110.0/24
216.205.24.0/24
170.10.129.0/24
63.128.21.0/24
170.10.133.0/24
185.58.84.93/32
207.211.41.113/32
207.211.30.64/26
207.211.30.128/25
216.145.221.0/24
170.10.128.0/24
170.10.132.56/29
170.10.132.64/29
include:za._netblocks.mimecast.com
41.74.192.0/22
41.74.200.0/23
41.74.196.0/22
41.74.204.0/23
41.74.206.0/24
include:de._netblocks.mimecast.com
51.163.158.0/24
194.104.109.0/24
194.104.111.0/24
194.104.110.21/32
194.104.110.240/28
62.140.10.21/32
62.140.7.0/24
194.104.108.240/29
194.104.108.21/32
51.163.159.0/24
include:au._netblocks.mimecast.com
103.13.69.0/24
124.47.150.0/24
124.47.189.0/24
103.96.23.0/24
103.96.21.0/24
180.189.28.0/24
216.145.217.0/24
103.96.22.96/28
103.96.22.22/32
103.96.20.22/32
103.96.20.96/28

DNS Lookup Details

1
mx:
steamcommunity.com
Resolved

MX records found: 2

Lookup cost: 3

MX Records:

us-smtp-inbound-1.mimecast.com (priority: 10) - A: 6, AAAA: 0
us-smtp-inbound-2.mimecast.com (priority: 10) - A: 6, AAAA: 0
2
include:
_netblocks.mimecast.com
Valid

SPF record found

Lookup cost: 7
Included by steamcommunity.com

TXT Record

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 include:ca._netblocks.mimecast.com include:usb._netblocks.mimecast.com ~all

Processed recursively per RFC 7208

3
include:
eu._netblocks.mimecast.com
Valid

SPF record found

Lookup cost: 0
Included by _netblocks.mimecast.com

TXT Record

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

Processed recursively per RFC 7208

4
include:
us._netblocks.mimecast.com
Valid

SPF record found

Lookup cost: 0
Included by _netblocks.mimecast.com

TXT Record

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 ip4:170.10.132.56/29 ip4:170.10.132.64/29 ~all

Processed recursively per RFC 7208

5
include:
za._netblocks.mimecast.com
Valid

SPF record found

Lookup cost: 0
Included by _netblocks.mimecast.com

TXT Record

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

Processed recursively per RFC 7208

6
include:
de._netblocks.mimecast.com
Valid

SPF record found

Lookup cost: 0
Included by _netblocks.mimecast.com

TXT Record

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 ip4:51.163.159.0/24 ~all

Processed recursively per RFC 7208

7
include:
au._netblocks.mimecast.com
Valid

SPF record found

Lookup cost: 0
Included by _netblocks.mimecast.com

TXT Record

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

Processed recursively per RFC 7208

8
include:
ca._netblocks.mimecast.com
Valid

SPF record found

Lookup cost: 0
Included by _netblocks.mimecast.com

TXT Record

v=spf1 ip4:170.10.145.0/24 ip4:170.10.147.0/24 ip4:170.10.144.126/32 ip4:170.10.146.126/32 ip4:170.10.144.240/29 ip4:170.10.146.240/29 ip4:216.145.216.0/24 ~all

Processed recursively per RFC 7208

Email Security Configuration

How steamcommunity.com configures email authentication

DMARC Domain Policy
Configured
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; pct=100; sp=reject; adkim=s; aspf=s; fo=1;
p=reject DKIM: strict SPF: strict Reports enabled
SPF Sender Authorization
Configured
v=spf1 mx include:_netblocks.mimecast.com -all
-all 1 include
BIMI Brand Indicator
Not set
No BIMI record configured for this domain

Change History

Monitoring started January 10, 2026

Configuration changes will appear here when detected

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About This Checker

What we check

We analyze your domain's email authentication: DMARC policy and alignment, SPF record and includes, and BIMI logo/CV when present.

Why it matters

Healthy authentication improves delivery and blocks spoofing. Major inbox providers increasingly require DMARC and robust SPF/DKIM practices for senders.

Included features

  • DMARC syntax, policy, and reporting validation
  • SPF record evaluation and include analysis
  • DKIM/SPF alignment interpretation
  • BIMI record and VMC detection
  • Clear setup and remediation guidance

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