mailsecuritygateway.com

.com dns

First seen 2026-05-04 · Last seen 2026-05-31 · error crawled 2026-05-30 5 attempts

DK · 94.231.101.82 · AS48854 team.blue Denmark A/S

Reputation 59/100 wrong cert crawl error dmarc partial coverage

ssl error: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: Hostname mismatch, certificate is not valid for 'mailsecuritygateway.com'. (_ssl.c:1000)

Registration

Registrar

Key-Systems GmbH

Created

2017-07-11

Expires

2027-07-11 405 days left

Updated

2025-11-26

Name servers

brett.ns.cloudflare.com
cortney.ns.cloudflare.com

DNS records live

NS

brett.ns.cloudflare.com
cortney.ns.cloudflare.com

MX

10 mx1.mailsecuritygateway.com
10 mx2.mailsecuritygateway.com

Verified for

Microsoft 365

Email authentication strong

SPF

v=spf1 ip4:152.115.42.164 ip4:87.116.46.77 ip4:87.116.46.70 include:spf.protection.outlook.com -all

strict (-all)

DMARC

v=DMARC1; p=quarantine; pct=20; rua=mailto:dmarcreports@mailsecuritygateway.com; ruf=mailto:dmarcreports@mailsecuritygateway.com

policy: quarantine · pct=20

DKIM

selector1: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA3RJw7eiiVZ6PfHA2GG979Yfl6D8bvXLw6wec6/f/4RLKTPCT9mSowTeA6Fna2TUEI6kulmrJtnMAeE…

selectors probed

Certificate (current) wrong cert

Sectigo Public Server Authentication CA DV R36

from 2026-03-09 to 2027-03-16

Expires in 288 days

Full certificate history on crt.sh ↗