broncolg.com: 99/100 (A)

broncolg.com

Score 99/100 · 0 failing, 3 warnings

Mail provider: Microsoft 365

Check another domain Re-scan

Scanned 13 hours ago. Re-scan for a fresh result after a fix.

Issues to fix

warnpct=100 is deprecated in DMARCbis, apply the policy to all mail.→
warnNo TLS-RPT reporting address. TLS delivery failures go unreported.→
warnBanner hostname does not match reverse DNS.→

Results

01Mail exchangers (MX)A

pass

1 MX record(s) found.

records

preference	exchange	ttl
0	broncolg-com.mail.protection.outlook.com	14400

info

Only one MX host, a secondary MX adds delivery resilience.

02Mail providerA

info

Mail provider: Microsoft 365.

provider microsoft365

03SPFA

pass

SPF record present.

record v=spf1 a mx include:spf.protection.outlook.com ip4:153.75.225.180 -all

pass

SPF uses 3 of the 10 permitted DNS lookups.

RFC 7208 §4.6.4

lookups 3

pass

-all default policy.

RFC 7208

04DKIMA

pass

Selector selector1 key is ~2048-bit.

selector selector1

record v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w…IDAQAB;

bits 2048

pass

Selector selector2 key is ~2048-bit.

selector selector2

record v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w…IDAQAB;

bits 2048

pass

Selector mail key is ~2048-bit.

selector mail

record v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w…IDAQAB

bits 2048

info

DKIM2 reuses these same selector._domainkey records and advertises no capability, so support cannot be detected from DNS. The 3 published key(s) carry over as they are. Adding an Ed25519 key (RFC 8463) prepares for it.

draft-ietf-dkim-dkim2-spec

keys 3

ed25519 false

05DMARCA

pass

DMARC record present.

record v=DMARC1; p=quarantine; pct=100

pass

Enforcing policy p=quarantine.

RFC 9989

p quarantine

rua false

warn

pct=100 is deprecated in DMARCbis, apply the policy to all mail.

RFC 9989

06DNS healthA

pass

2 nameservers published.

RFC 2182

count 2

pass

SOA timers are sane.

RFC 1912

mname ns1.extronos.com.

rname root.broncolg.com.

refresh 14400

retry 3600

expire 1209600

minimum 3600

info

Zone is not DNSSEC-signed.

RFC 9364

07BlacklistsA

info

IPv6 MX addresses are not checked against IP DNSBLs.

pass

52.101.144.0 is not listed on SpamCop.

target 52.101.144.0

list SpamCop

pass

52.101.145.0 is not listed on SpamCop.

target 52.101.145.0

list SpamCop

pass

52.101.145.76 is not listed on SpamCop.

target 52.101.145.76

list SpamCop

pass

52.101.144.3 is not listed on SpamCop.

target 52.101.144.3

list SpamCop

pass

52.101.144.0 is not listed on GBUdb Truncate.

target 52.101.144.0

list GBUdb Truncate

pass

52.101.144.0 is not listed on PSBL.

target 52.101.144.0

list PSBL

pass

52.101.145.76 is not listed on GBUdb Truncate.

target 52.101.145.76

list GBUdb Truncate

pass

52.101.144.3 is not listed on GBUdb Truncate.

target 52.101.144.3

list GBUdb Truncate

pass

52.101.145.0 is not listed on GBUdb Truncate.

target 52.101.145.0

list GBUdb Truncate

pass

52.101.144.3 is not listed on PSBL.

target 52.101.144.3

list PSBL

pass

52.101.145.0 is not listed on Spamhaus ZEN.

target 52.101.145.0

list Spamhaus ZEN

pass

52.101.145.76 is not listed on Spamhaus ZEN.

target 52.101.145.76

list Spamhaus ZEN

pass

52.101.145.0 is not listed on PSBL.

target 52.101.145.0

list PSBL

pass

52.101.144.3 is not listed on Spamhaus ZEN.

target 52.101.144.3

list Spamhaus ZEN

pass

52.101.145.76 is not listed on PSBL.

target 52.101.145.76

list PSBL

pass

52.101.144.0 is not listed on Spamhaus ZEN.

target 52.101.144.0

list Spamhaus ZEN

pass

52.101.145.0 is not listed on Spamhaus AuthBL.

target 52.101.145.0

list Spamhaus AuthBL

pass

broncolg.com is not listed on Spamhaus DBL.

target broncolg.com

list Spamhaus DBL

pass

52.101.144.0 is not listed on Spamhaus AuthBL.

target 52.101.144.0

list Spamhaus AuthBL

pass

broncolg.com is not listed on Spamhaus ZRD.

target broncolg.com

list Spamhaus ZRD

pass

52.101.144.3 is not listed on Spamhaus AuthBL.

target 52.101.144.3

list Spamhaus AuthBL

pass

52.101.145.76 is not listed on Spamhaus AuthBL.

target 52.101.145.76

list Spamhaus AuthBL

08Bulk sending readinessA

pass

SPF, DKIM and DMARC are all present: the domain meets the Gmail/Yahoo and Microsoft bulk-sender authentication requirements (5,000+ messages/day).

spf true

dkim true

dmarc true

threshold 5,000 messages/day

info

One-click List-Unsubscribe is a message-level header. Verify by sending a test message.

09TLSA

info

No DANE/TLSA records. DANE is not deployed for these mail servers.

RFC 7672

hosts broncolg-com.mail.protection.outlook.com

pass

Negotiated TLSv1.3.

RFC 8996

tls_version TLSv1.3

host broncolg-com.mail.protection.outlook.com

pass

Certificate valid for 86 more day(s).

not_after 2027-01-27T18:40:49+00:00

host broncolg-com.mail.protection.outlook.com

pass

Certificate covers broncolg-com.mail.protection.outlook.com.

RFC 6125

names mail.protection.outlook.com, *.mail.eo.outlook.com, *.mail.protection.outlook.com, mail.messaging.microsoft.com, outlook.com, *.olc.protection.outlook.com, *.pamx1.hotmail.com, *.mail.protection.outlook.de, *.mx.microsoft, *.k-v1.mx.microsoft, *.n-v1.mx.microsoft, *.q-v1.mx.microsoft, *.y-v1.mx.microsoft, *.d-v1.mx.microsoft, *.e-v1.mx.microsoft, *.a-v1.mx.microsoft, *.r-v1.mx.microsoft, *.w-v1.mx.microsoft, *.p-v1.mx.microsoft, *.x-v1.mx.microsoft, *.j-v1.mx.microsoft, *.s-v1.mx.microsoft, *.c-v1.mx.microsoft, *.b-v1.mx.microsoft, *.f-v1.mx.microsoft, *.i-v1.mx.microsoft, *.t-v1.mx.microsoft, *.m-v1.mx.microsoft, *.o-v1.mx.microsoft, *.g-v1.mx.microsoft, *.v-v1.mx.microsoft, *.h-v1.mx.microsoft, *.l-v1.mx.microsoft, *.u-v1.mx.microsoft

host broncolg-com.mail.protection.outlook.com

pass

Server presented a 3-certificate chain.

chain_len 3

host broncolg-com.mail.protection.outlook.com

10MTA-STSA

info

No MTA-STS policy. Inbound mail is delivered without enforced TLS.

RFC 8461

warn

No TLS-RPT reporting address. TLS delivery failures go unreported.

RFC 8460

11BIMIA

info

No BIMI record. No brand logo is published for inboxes with BIMI support.

BIMI draft

12Email Verification Protocol

info

No Email Verification Protocol record. Browsers cannot verify addresses at this domain without sending an email.

EVP draft

SMTP (live probe)

info

No DANE/TLSA records. DANE is not deployed for these mail servers.

RFC 7672

hosts broncolg-com.mail.protection.outlook.com

pass

1 of 1 MX host(s) reachable on port 25.

RFC 5321

reachable broncolg-com.mail.protection.outlook.com

unreachable (none)

pass

Greeting is 220 with a hostname (PN1PEPF000062B9.mail.protection.outlook.com).

RFC 5321

banner 220 PN1PEPF000062B9.mail.protection.outlook.com Microsoft ESMTP MAIL Service ready at Mon, 2 Nov 2026 00:31:22 +0000 [08DF36AC288985E2]

warn

Banner hostname does not match reverse DNS.

banner_fqdn PN1PEPF000062B9.mail.protection.outlook.com

ptr mail-pnzpr01cu00200.inbound.protection.outlook.com

pass

EHLO accepted with 8 extension(s).

RFC 5321

extensions 8BITMIME, BINARYMIME, CHUNKING, DSN, ENHANCEDSTATUSCODES, PIPELINING, SIZE, SMTPUTF8

pass

Server advertises SMTPUTF8, so it accepts internationalized (EAI) email addresses.

RFC 6531

info

Server does not advertise REQUIRETLS; senders cannot demand TLS-only delivery to this host.

RFC 8689

pass

STARTTLS is advertised in EHLO.

RFC 3207

pass

STARTTLS negotiated a working TLS session.

RFC 3207

tls_version TLSv1.3

pass

Negotiated TLSv1.3.

RFC 8996

tls_version TLSv1.3

host broncolg-com.mail.protection.outlook.com

pass

Certificate valid for 86 more day(s).

not_after 2027-01-27T18:40:49+00:00

host broncolg-com.mail.protection.outlook.com

pass

Certificate covers broncolg-com.mail.protection.outlook.com.

RFC 6125

host broncolg-com.mail.protection.outlook.com

pass

Server presented a 3-certificate chain.

chain_len 3

host broncolg-com.mail.protection.outlook.com

pass

Server refused external relay, as expected.

RFC 5321

reply 501 5.1.5 Recipient address reserved by RFC 2606 [PN1PEPF000062B9.INDPRD01.PROD.OUTLOOK.COM 2026-11-02T00:31:24.408Z 08DF36AC288985E2]

pass

Server accepts the null sender (MAIL FROM:<>), so bounces and DSNs can be delivered.

RFC 5321

reply 250 2.1.0 Sender OK

About this report

This report grades the email and DNS setup of broncolg.com against the relevant RFCs. Each check links to the standard behind the rule. A high grade means the common causes of spoofing and poor deliverability are covered. A grade is not a guarantee that every message reaches the inbox.

Frequently asked questions

What does the grade mean?

The grade summarizes how completely the domain implements the core email authentication and DNS standards. A and B mean the main protections (SPF, DKIM, DMARC, valid MX) are in place. Lower grades flag gaps that make spoofing easier or hurt deliverability. A missing MX record caps the grade at F, a weak SPF all-qualifier caps at D, and no DMARC caps at C.

How fresh is this report?

A report is a snapshot from when it was last scanned, kept as a shareable link. If you are fixing your setup, use the Re-scan button to run every check live again.

Why is the SMTP section still loading?

The live SMTP probe connects to the mail servers from a dedicated prober, which takes a few seconds and runs separately from the DNS checks. The results stream in when ready. If SMTP was not requested for this report, that section stays empty.

I own this domain and want to stop scan.mx checking it.

Domain owners can block scanning by publishing a DNS TXT record; see the opt-out page.

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