Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
rennes-sb.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-24 08:44:03 UTC · ↺ Refresh
MX Hostnames
- rennessb-com01e.mail.protection.outlook.com
MX Priorities
- rennessb-com01e.mail.protection.outlook.com: 0
A / AAAA Records
- 51.68.23.58 ↩ vs48.concept-image.cognix-systems.net
Mail Server IPs
- 52.101.73.22 ↩ mail-am7pr05cu00106.inbound.protection.outlook.com
- 52.101.68.16 ↩ mail-db4pr02cu00400.inbound.protection.outlook.com
- 52.101.68.5 ↩ mail-du2pr03cu00105.inbound.protection.outlook.com
- 52.101.68.29 ↩ mail-dbapr03cu00105.inbound.protection.outlook.com
- 2a01:111:f403:ca04::c ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
- 2a01:111:f403:ca04::d ↩ mail-db6pr03cu00105.inbound.protection.outlook.com
- 2a01:111:f403:ca04::f ↩ mail-db7pr03cu00507.inbound.protection.outlook.com
- 2a01:111:f403:ca09::c ↩ mail-as8pr05cu00304.inbound.protection.outlook.com
SOA Record
Raw SOA
dns112.ovh.net tech.ovh.net 2026031700 86400 3600 3600000 300
Primary NS (mname)
dns112.ovh.net
Admin Email (rname)
tech@ovh.net
Serial
2026031700
Refresh
86400s
Retry
3600s
Expire
3600000s
Minimum TTL
300s
Nameservers (NS)
dns112.ovh.net
ns112.ovh.net
SPF Record
✓ Strict (-all)
v=spf1 ip4:91.212.128.153 ip4:46.105.57.169 ip4:93.188.174.148 include:spf.protection.outlook.com include:_spf.fullfabric.com include:25585907.spf05.hubspotemail.net include:mail.zendesk.com include:_spf.netanswer.fr include:servers.mcsv.net include:spf.mailjet.com -all
📊 DNS lookups: 7/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 5 found
selector1._domainkey
selector2._domainkey
mail._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 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
13 records- SPFv=spf1 ip4:91.212.128.153 ip4:46.105.57.169 ip4:93.188.174.148 include:spf.protection.outlook.com include:_spf.fullfabric.com include:25585907.spf05.hubspotemail.net include:mail.zendesk.com include:_spf.netanswer.fr include:servers.mcsv.net include:spf.mailjet.com -all
- 2|http://www.esc-rennes.fr/
- mandrill_verify.WamOHSe89NpJJnELJU3zjw
- yr3nrm2w364n55gx74p0x9k5lxxr8jd7
- apple-domain-verification=MuYjBNTIRhdDA3rc
- clearnox:21f1d3dc-e032-11f0-bf4b-1eebc59db60b
- google-site-verification=VH0xdUJDvVwpArz5wsAqRKdPyap-hqsVGanoUrYV6ZU
- openai-domain-verification=dv-lYcjUG97FgNivl7h1JiJKTP8
- openai-domain-verification=dv-8cumDwhCRHxzfs80NZfNNZ3o
- k|Rennes School of Business master international
- t|Rennes School of Business
- brevo-code:09357c2630559d902817770f34dbf0b1
- google-gws-recovery-domain-verification=68807826
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