Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
firstar.bank
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-26 15:10:57 UTC · ↺ Refresh
MX Hostnames
- firstar-bank.mail.protection.outlook.com
MX Priorities
- firstar-bank.mail.protection.outlook.com: 0
A / AAAA Records
- 161.199.217.43 (no PTR)
Mail Server IPs
- 52.101.42.14 ↩ mail-mw2pr04cu00106.inbound.protection.outlook.com
- 52.101.41.0 ↩ mail-byapr05cu00400.inbound.protection.outlook.com
- 52.101.50.7 ↩ mail-co1pr21cu00207.inbound.protection.outlook.com
- 52.101.41.24 ↩ mail-sj0pr03cu01600.inbound.protection.outlook.com
- 2a01:111:f403:f90d:: ↩ mail-sn1pr0501cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c946::1 ↩ mail-ch1pr04cu00101.inbound.protection.outlook.com
- 2a01:111:f403:f90a::1 ↩ mail-bn8pr03cu00201.inbound.protection.outlook.com
- 2a01:111:f403:f903:: (no PTR)
SOA Record
Raw SOA
ns2.firstar.bank dnsmaster.firstar.bank 2994 302400 3600 1209600 600
Primary NS (mname)
ns2.firstar.bank
Admin Email (rname)
dnsmaster@firstar.bank
Serial
2994
Refresh
302400s
Retry
3600s
Expire
1209600s
Minimum TTL
600s
Nameservers (NS)
ns4.firstar.bank
ns2.firstar.bank
ns3.firstar.bank
SPF Record
✓ Strict (-all)
v=spf1 ip4:64.106.214.50 ip4:205.201.133.57 ip4:192.226.100.98 ip4:12.165.112.51 ip4:12.165.112.53 ip4:199.186.59.25 include:_spf.createsend.com include:_spf.sendergen.com include:spf.protection.outlook.com include:spfhost.messageprovider.com include:relay.mailchannels.net -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; pct=100; rua=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._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
6 records- docusign=b01895f6-f642-490b-ab2a-ce545c36882f
- d6a7e44c4601031682c7b5d44c62e2f31f1d44addd1c3a98f4
- adobe-idp-site-verification=6cceefb531910fa70ea361ede32939096d57676a9235f8db33590cff1be64484
- SPFv=spf1 ip4:64.106.214.50 ip4:205.201.133.57 ip4:192.226.100.98 ip4:12.165.112.51 ip4:12.165.112.53 ip4:199.186.59.25 include:_spf.createsend.com include:_spf.sendergen.com include:spf.protection.outlook.com include:spfhost.messageprovider.com include:relay.mailchannels.net -all
- MS=ms63334387
- n3059urtofidm9qofgqasj2chj
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