Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
houstongrandopera.org
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 05:35:01 UTC · ↺ Refresh
MX Hostnames
- houstongrandopera-org.mail.protection.outlook.com
MX Priorities
- houstongrandopera-org.mail.protection.outlook.com: 0
A / AAAA Records
- 76.76.21.21 (no PTR)
Mail Server IPs
- 52.101.41.21 ↩ mail-sj2pr05cu00305.inbound.protection.outlook.com
- 52.101.41.3 ↩ mail-sj2pr05cu00103.inbound.protection.outlook.com
- 52.101.11.13 ↩ mail-sn1pr0501cu00205.inbound.protection.outlook.com
- 52.101.11.7 ↩ mail-sa9pr04cu00107.inbound.protection.outlook.com
- 2a01:111:f403:f908:: ↩ mail-bn1pr21cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c902::1 ↩ mail-sj2pr05cu00401.inbound.protection.outlook.com
- 2a01:111:f403:c91d::a ↩ mail-co1pr21cu00202.inbound.protection.outlook.com
- 2a01:111:f403:f802::3 ↩ mail-sj0pr03cu01403.inbound.protection.outlook.com
SOA Record
Raw SOA
cbru.br.ns.els-gms.att.net rm-hostmaster.ems.att.com 92 10800 3600 604800 3600
Primary NS (mname)
cbru.br.ns.els-gms.att.net
Admin Email (rname)
rm-hostmaster@ems.att.com
Serial
92
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
cmtu.mt.ns.els-gms.att.net
cbru.br.ns.els-gms.att.net
SPF Record
✓ Strict (-all)
v=spf1 ip4:50.238.115.146 include:emailcampaigns.net include:spf.protection.outlook.com include:authsmtp.com include:sendgrid.net -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected],mailto:[email protected],mailto:[email protected],mailto:[email protected];ruf=mailto:[email protected];fo=1;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected],mailto:[email protected],mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
9 records- google-site-verification=__iYZtVB81SQfCIaotkrJHbZ67NDEHkyxDY_I87BJEw
- MS=66A9C241F5302CA4EB6428E2DB779ACF259CC0E6
- MS=ms50847362
- MS=ms76282940
- google-site-verification=3BBF_lZePzoZmCE_l7NSnbcfsNE29qRtwt0fUPj3mDU
- docusign=983010a3-fd26-4876-9ae6-b5a280b188da
- nj8itv3aftr4cuil6l63fb9p2r
- apple-domain-verification=K0eanxRyMLWTb9R9
- SPFv=spf1 ip4:50.238.115.146 include:emailcampaigns.net include:spf.protection.outlook.com include:authsmtp.com include:sendgrid.net -all
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