Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
b2bservicios.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-27 01:40:17 UTC · ↺ Refresh
MX Hostnames
- mx1.emailsrvr.com
- mx2.emailsrvr.com
MX Priorities
- mx2.emailsrvr.com: 20
- mx1.emailsrvr.com: 10
A / AAAA Records
- 72.32.155.160 ↩ 1106413-db3.b2bservicios.com
Mail Server IPs
- 146.20.161.2 ↩ mx2.emailsrvr.com
- 184.106.54.1 ↩ mx1.emailsrvr.com
SOA Record
Raw SOA
ns.rackspace.com hostmaster.rackspace.com 1774570860 10800 3600 604800 300
Primary NS (mname)
ns.rackspace.com
Admin Email (rname)
hostmaster@rackspace.com
Serial
1774570860
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
ns.rackspace.com
ns2.rackspace.com
SPF Record
✓ Strict (-all)
v=spf1 a mx include:emailsrvr.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; rf=afrf; pct=100
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: s1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
12 records- duo_sso_verification=BfLBAyYdBWPYSFNm6mjNoR7d7NnFFx686YVkTS53TRIpQhyP0pPvlHjrLkOEkwIH
- globalsign-domain-verification=CF5882EC1C4BA1F1F7FECDF574BD114F
- globalsign-domain-verification=1BC7CD171A5A9FE4D51846990F1BE7C0
- globalsign-domain-verification=1A234B6B515C6AFD84B0E9D8B8432404
- globalsign-domain-verification=EBB84F585D12A84DE710BA9435AE637C
- MS=ms94147014
- globalsign-domain-verification=6C213203099C4BD16CE73B73546B9FF5
- globalsign-domain-verification=d5cdd23e98cd866b7ad6d935be6dac41
- globalsign-domain-verification=d5b70ce9bc6c8fb2d94cbdacb399ed0a
- globalsign-domain-verification=F6272BA25692895E6C9249F0A9C18BB2
- SPFv=spf1 a mx include:emailsrvr.com -all
- globalsign-domain-verification=6AA50AB4F24AD09F0E5DF46B426ACA72
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