astera.com

Valid Email Server
Domain Lookup › astera.com
Live data — DNS records and disposable check were just fetched and saved.

Domain Overview

DNS: ⚡ live Checker: ⚡ live
astera.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-05-20 22:40:43 UTC · ↺ Refresh

MX Hostnames

  • astera-com.mail.protection.outlook.com

MX Priorities

No priority data.

A / AAAA Records

  • 76.76.21.21

Mail Server IPs

No IPs resolved.

SOA Record

No SOA record found.

Nameservers (NS)

nicole.ns.cloudflare.com
lynn.ns.cloudflare.com

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected];
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

DKIM Selectors

✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
✓ DKIM properly configured for selector: selector1

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

13 records
  • DMARCv=DMARC1; p=none; pct=100;
  • SPFv=spf1 include:spf.protection.outlook.com -all
  • anthropic-domain-verification-89s21p=XQnCHMwwIAZOLhm4HaPlOprkt
  • cursor-domain-verification-xy6tsr=L5T93u9VCJQQDkpa3Y4n80iCU
  • d365mktkey=kKOOeQC2UuxmOgd47nPEBy3okVea5EmvavxdQ6t0kVIx
  • google-site-verification=WZp7J_swlv5ezkS9GkPBLmrfypo207fPJOaPqzcxBuQ
  • google-site-verification=X4SHlfDFu95Oj1hPJ5A6z3D-CJJ7tutJEZAIuNVgbSM
  • google-site-verification=dRMzKleWi3xv8hf4Voy3vkT1KbISJBetMrMvQlAWzsk
  • google-site-verification=fB8gdM8t3jhmQpdujPp2n1g6MXWTA_WWC3bFPYHirLA
  • include:6926702.spf01.hubspotemail.net
  • include:spf.protection.outlook.com ip4:13.110.78.238 include:spf.tmes.trendmicro.com -all
  • ms-domain-verification=94adb44b-ca84-4a07-bcf8-ec842975e654
  • tmes=f9380592973736b21008bf5dffd1e52a
Full email verification for astera.com

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