Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
system1.com
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-20 15:27:02 UTC · ↺ Refresh
MX Hostnames
- alt3.aspmx.l.google.com
- alt4.aspmx.l.google.com
- alt2.aspmx.l.google.com
- alt1.aspmx.l.google.com
- aspmx.l.google.com
MX Priorities
- alt4.aspmx.l.google.com: 10
- alt1.aspmx.l.google.com: 5
- alt2.aspmx.l.google.com: 5
- aspmx.l.google.com: 1
- alt3.aspmx.l.google.com: 10
A / AAAA Records
- 13.249.91.93
- 13.249.91.91
- 13.249.91.119
- 13.249.91.4
Mail Server IPs
- 173.194.76.27 ↩ ws-in-f27.1e100.net
- 2a00:1450:400c:c00::1b ↩ ws-in-f27.1e100.net
- 108.177.123.27 ↩ lcscld-in-f27.1e100.net
- 2800:3f0:4003:c0f::1a (no PTR)
- 172.253.116.26 ↩ dj-in-f26.1e100.net
- 2a00:1450:400b:c02::1a ↩ dj-in-f26.1e100.net
- 192.178.218.27 ↩ yuiadtq-in-f27.1e100.net
- 2607:f8b0:4004:c1f::1b ↩ pd-in-f27.1e100.net
- 192.178.223.27 ↩ yulhrs-in-f27.1e100.net
- 2a00:1450:4009:c0f::1b ↩ yulhrs-in-f27.1e100.net
SOA Record
Raw SOA
ns-1990.awsdns-56.co.uk awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1990.awsdns-56.co.uk
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-929.awsdns-52.net
ns-1456.awsdns-54.org
ns-190.awsdns-23.com
ns-1990.awsdns-56.co.uk
SPF Record
✓ Soft Fail (~all)
v=spf1 include:_spf.mlsend.com include:_spf.google.com include:stspg-customer.com include:amazonses.com exists:%{i}._spf.sparkpostmail.com include:mail.zendesk.com ~all
📊 DNS lookups: 6/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; pct=100; adkim=r
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 3 found
google._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: google
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
20 records- cursor-domain-verification-t0b6b2=ISF3cfHdareqwgaEwjkG1jfOO
- google-site-verification=AWY1TScR4P5zebT2js8yvFGOW_fFZ5aw3jk5WaNwCDw
- atlassian-domain-verification=kpW93Gl0HucESn1XIuigK0EfPnA8gPRAkNY/HH6ej3NcfKLftxRcrx0fvla1iciX
- mailerlite-domain-verification=bfa309daa15fa126345c650faf79e29dd43a4a08
- onetrust-domain-verification=a78478c89dfb4855aeb61c8bd10e7470
- google-site-verification=kL2Ydfg48bioOamQBsNuxP7vnLy_GybQsnS2kPJ7RiQ
- MS=ms31899983
- openai-domain-verification=dv-Jz2SOzQpr7GfZPWZeQCS0Nzn
- mgverify=b41d4c2ce795bdee8512e72cd60f9f4c277c4d7a44a78e3f4db0d8ff2d022faa
- canva-site-verification=PrQ5tpTL-SV_k4qFdQS6xA
- apple-domain-verification=TmVqZjfw9pQOJefo
- docusign=2044380e-5461-4a2b-abcb-5dbb8237efe1
- SPFv=spf1 include:_spf.mlsend.com include:_spf.google.com include:stspg-customer.com include:amazonses.com exists:%{i}._spf.sparkpostmail.com include:mail.zendesk.com ~all
- slack-domain-verification=CG1nykKzQSkWXJhSZpwi3QmnDmPbLHt0v3qfGKo0
- onetrust-domain-verification=cee240e9d9dc4fbabd77154ee4c1bd77
- mongodb-site-verification=lfEHusIe2ZcPNVJe7SqGuNdnKMrcR5MG
- 0b1b7fd261ac45adb5f746bf59a883c7
- google-site-verification=5MW6VbzV3exbvGWJBCKvOnhrNUTANAWL67POpi7lj7I
- status-page-domain-verification=l94x5fvjqqlm
- citrix-verification-code=8cd57b2c-0903-422d-8e5d-23b03ed0df84
Full email verification for system1.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits