Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
t-systems.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-30 08:20:56 UTC · ↺ Refresh
MX Hostnames
- mailin42.telekom.de
- mailin22.telekom.de
- mailin.ng.telekom.net
MX Priorities
- mailin.ng.telekom.net: 100
- mailin42.telekom.de: 300
- mailin22.telekom.de: 300
A / AAAA Records
- 80.158.66.24 (no PTR)
Mail Server IPs
- 3.126.204.238 ↩ ec2-3-126-204-238.eu-central-1.compute.amazonaws.com
- 3.71.246.67 ↩ ec2-3-71-246-67.eu-central-1.compute.amazonaws.com
- 194.25.225.200 ↩ mailin42.telekom.de
- 194.25.225.140 ↩ mailin22.telekom.de
SOA Record
Raw SOA
dns1.telekom.de dnsadmin.t-systems.com 2019032400 10800 1800 604800 600
Primary NS (mname)
dns1.telekom.de
Admin Email (rname)
dnsadmin@t-systems.com
Serial
2019032400
Refresh
10800s
Retry
1800s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
pns.dtag.de
dns1.telekom.de
dns2.telekom.de
ns1.telekom.net
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:193.192.231.129 ip4:193.192.231.130 ip4:205.201.128.0 ip4:198.2.128.0/18 ip4:148.105.8.0/21 include:_spfa.telekom.com include:_spf.t-systems.at ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1;p=quarantine;rua=mailto:[email protected];ruf=mailto:[email protected];
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
mail._domainkey
k1._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: mail
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
23 records- google-site-verification=-o2GHDwcZBAZ2Kxwjh8RH-DvlwH0ZOZysiNSP4HAPQI
- Dynatrace-site-verification=70b98375-abd0-4fae-a040-4af2864afd9f__fnkttm0cde7kca9jq1mjcnkdeq
- amazonses:tqgFbDojTeDWZRynV3tPlXAOer/ym8VYFSygcTrw6x4=
- MS=ms45872334
- docusign=d5b1e542-65d2-4bee-83d5-060631cdd5c5
- ZOOM_verify_CNemhMwYuu3HORMGs2mOxB
- docusign=d5da1847-9e9b-4933-826e-ea895e4b4675
- amazonses:WT0UTxpzNWvD5h9koLnRkGthAhkppJtoEiek9bXh26Q=
- docusign=5d032b91-4142-4f08-9247-87ffb01fbb2d
- infoblox-domain-mastery=43a2ee62a400dc461f04184e61709fa73c541cc4544f57bb9d5aa075dbd03a60e2
- UNDbgYkLGb5IJkojeOxskc+4M7fEtSJ61NOMPzVxzXrzwTfu+jSMWPQ2S8hlcWDwHv6tlTU0kuElCdUE3PYcRA==
- webexdomainverification.BSJE=4de49a7a-bbee-4d28-9d4e-df6ec267f1f0
- google-site-verification=pPJpg7lXFPgyWZGkorijg0Gf2I9Zn_hIOQjhzJpiQH8
- atlassian-domain-verification=RYDBmArxP6DhrshwBcIZoo3ZF26BwxWI06Enb8LaC7YfF2d8cPno6tILbMv8SCVS
- webexdomainverification.IPJP=7f99a256-5c5f-467a-8bbd-e4ebc5e6fc91
- adobe-idp-site-verification=22f64faf827865075c1f3f1d814848b67f1e2ebe012796f5b958a206affdcbeb
- easydmarc-verification:00d9ae26-b3c0-4d6d-abab-e7988224ea88
- SPFv=spf1 ip4:193.192.231.129 ip4:193.192.231.130 ip4:205.201.128.0 ip4:198.2.128.0/18 ip4:148.105.8.0/21 include:_spfa.telekom.com include:_spf.t-systems.at ~all
- 2lcBNenxzZbeLri77hiDIHME2PcswdukTLTgLnE5kYXvkswSnXJzfpQ3HXv61KYIj7CwmKVnHSD82ioCe1cgrQ==
- _telesec-domain-validation=273890_2019-09-06_NVPuAKSv92g5icVfZ1AVx9VRmmiLTHVHIyjZ5nvPvqRTMpSNY7
- figma-domain-verification=160013d7cef1653e8d58a5908848cf939b066e8e3f0a88e17c5a9ca33e8220a1-1742993164
- miro-verification=089da153dee3b2bdebb4e4940c914abf39a26035
- mongodb-site-verification=PfkPONidd16m2Q7u7JKabs3mKttR0Vy6
Full email verification for t-systems.com
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