mvdh.nl: 99/100 (A)

mvdh.nl

Score 99/100 · 0 failing, 4 warnings

Mail provider: Microsoft 365

Check another domain Re-scan

Scanned 4 hours ago. Re-scan for a fresh result after a fix.

Issues to fix

warnLow MX TTL (60s), frequent re-lookups add latency and load.→
warnSelector s2 key is ~1024-bit, rotate to 2048-bit.→
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
10	mvdh-nl.mail.protection.outlook.com	60

info

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

warn

Low MX TTL (60s), frequent re-lookups add latency and load.

ttls 60

02Mail providerA

info

Mail provider: Microsoft 365.

provider microsoft365

03SPFA

pass

SPF record present.

record v=spf1 include:spf.protection.outlook.com include:smtp.spf.ziggo.nl include:em5923.mvdh.nl include:emsd1.com -all

pass

SPF uses 4 of the 10 permitted DNS lookups.

RFC 7208 §4.6.4

lookups 4

pass

-all default policy.

RFC 7208

04DKIMA

pass

Selector selector2 key is ~2048-bit.

selector selector2

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

bits 2048

pass

Selector selector1 key is ~2048-bit.

selector selector1

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

bits 2048

pass

Selector s1 key is ~2048-bit.

selector s1

record k=rsa; t=s; p=MIIBIjANBgkqhkiG9w…IDAQAB

bits 2048

warn

Selector s2 key is ~1024-bit, rotate to 2048-bit.

RFC 8301

selector s2

record k=rsa; t=s; p=MIGfMA0GCSqGSIb3DQ…IDAQAB

bits 1024

info

DKIM2 reuses these same selector._domainkey records and advertises no capability, so support cannot be detected from DNS. The 4 published key(s) carry over as they are. Adding an Ed25519 key (RFC 8463) prepares for it.

draft-ietf-dkim-dkim2-spec

keys 4

ed25519 false

05DMARCA

pass

DMARC record present.

record v=DMARC1; p=quarantine; sp=quarantine; adkim=r; aspf=r; rua=mailto:dmarc@mvdh.nl;

pass

Enforcing policy p=quarantine.

RFC 9989

p quarantine

rua true

06DNS healthA

pass

2 nameservers published.

RFC 2182

count 2

pass

SOA timers are sane.

RFC 1912

mname ns1.duocast.net.

rname hostmaster.duocast.net.

refresh 86400

retry 7200

expire 1209600

minimum 3600

pass

Zone is DNSSEC-signed and validating.

RFC 9364

07BlacklistsA

info

IPv6 MX addresses are not checked against IP DNSBLs.

pass

52.101.68.0 is not listed on SpamCop.

target 52.101.68.0

list SpamCop

pass

52.101.91.162 is not listed on SpamCop.

target 52.101.91.162

list SpamCop

pass

52.101.68.29 is not listed on SpamCop.

target 52.101.68.29

list SpamCop

pass

52.101.73.12 is not listed on SpamCop.

target 52.101.73.12

list SpamCop

pass

52.101.73.12 is not listed on GBUdb Truncate.

target 52.101.73.12

list GBUdb Truncate

pass

52.101.68.0 is not listed on GBUdb Truncate.

target 52.101.68.0

list GBUdb Truncate

pass

52.101.91.162 is not listed on GBUdb Truncate.

target 52.101.91.162

list GBUdb Truncate

pass

52.101.68.29 is not listed on GBUdb Truncate.

target 52.101.68.29

list GBUdb Truncate

pass

52.101.73.12 is not listed on PSBL.

target 52.101.73.12

list PSBL

pass

52.101.68.0 is not listed on PSBL.

target 52.101.68.0

list PSBL

pass

52.101.91.162 is not listed on PSBL.

target 52.101.91.162

list PSBL

pass

52.101.68.29 is not listed on PSBL.

target 52.101.68.29

list PSBL

pass

mvdh.nl is not listed on Spamhaus ZRD.

target mvdh.nl

list Spamhaus ZRD

pass

52.101.91.162 is not listed on Spamhaus ZEN.

target 52.101.91.162

list Spamhaus ZEN

pass

52.101.68.0 is not listed on Spamhaus AuthBL.

target 52.101.68.0

list Spamhaus AuthBL

pass

52.101.73.12 is not listed on Spamhaus AuthBL.

target 52.101.73.12

list Spamhaus AuthBL

pass

52.101.91.162 is not listed on Spamhaus AuthBL.

target 52.101.91.162

list Spamhaus AuthBL

pass

52.101.68.29 is not listed on Spamhaus AuthBL.

target 52.101.68.29

list Spamhaus AuthBL

pass

mvdh.nl is not listed on Spamhaus DBL.

target mvdh.nl

list Spamhaus DBL

pass

52.101.68.0 is not listed on Spamhaus ZEN.

target 52.101.68.0

list Spamhaus ZEN

pass

52.101.73.12 is not listed on Spamhaus ZEN.

target 52.101.73.12

list Spamhaus ZEN

pass

52.101.68.29 is not listed on Spamhaus ZEN.

target 52.101.68.29

list Spamhaus ZEN

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 mvdh-nl.mail.protection.outlook.com

pass

Negotiated TLSv1.3.

RFC 8996

tls_version TLSv1.3

host mvdh-nl.mail.protection.outlook.com

pass

Certificate valid for 145 more day(s).

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

host mvdh-nl.mail.protection.outlook.com

pass

Certificate covers mvdh-nl.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 mvdh-nl.mail.protection.outlook.com

pass

Server presented a 3-certificate chain.

chain_len 3

host mvdh-nl.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

SMTP (live probe)

info

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

RFC 7672

hosts mvdh-nl.mail.protection.outlook.com

pass

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

RFC 5321

reachable mvdh-nl.mail.protection.outlook.com

unreachable (none)

pass

Greeting is 220 with a hostname (DU6PEPF00009528.mail.protection.outlook.com).

RFC 5321

banner 220 DU6PEPF00009528.mail.protection.outlook.com Microsoft ESMTP MAIL Service ready at Fri, 4 Sep 2026 08:23:12 +0000 [08DF0A13E4582A43]

warn

Banner hostname does not match reverse DNS.

banner_fqdn DU6PEPF00009528.mail.protection.outlook.com

ptr mail-db3pr0202cu00100.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 mvdh-nl.mail.protection.outlook.com

pass

Certificate valid for 145 more day(s).

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

host mvdh-nl.mail.protection.outlook.com

pass

Certificate covers mvdh-nl.mail.protection.outlook.com.

RFC 6125

host mvdh-nl.mail.protection.outlook.com

pass

Server presented a 3-certificate chain.

chain_len 3

host mvdh-nl.mail.protection.outlook.com

pass

Server refused external relay, as expected.

RFC 5321

reply 501 5.1.5 Recipient address reserved by RFC 2606 [DU6PEPF00009528.eurprd02.prod.outlook.com 2026-09-04T08:23:13.133Z 08DF0A13E4582A43]

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 mvdh.nl 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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