Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
post.edu
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 15:57:09 UTC · ↺ Refresh
MX Hostnames
- post-edu.mail.protection.outlook.com
MX Priorities
- post-edu.mail.protection.outlook.com: 0
A / AAAA Records
- 104.18.17.135 (no PTR)
- 104.18.16.135 (no PTR)
- 2606:4700::6812:1087
- 2606:4700::6812:1187
Mail Server IPs
- 52.101.11.10 ↩ mail-sa9pr03cu00202.inbound.protection.outlook.com
- 52.101.42.16 ↩ mail-co1pr05cu00300.inbound.protection.outlook.com
- 52.101.41.54 ↩ mail-sj2pr05cu00506.inbound.protection.outlook.com
- 52.101.41.6 ↩ mail-sj0pr03cu01406.inbound.protection.outlook.com
- 2a01:111:f403:f901:: ↩ mail-mn2pr04cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c902::5 ↩ mail-sj2pr05cu00505.inbound.protection.outlook.com
- 2a01:111:f403:c92c::2 ↩ mail-dm2pr04cu00102.inbound.protection.outlook.com
- 2a01:111:f403:f902::1 ↩ mail-bl2pr02cu00101.inbound.protection.outlook.com
SOA Record
Raw SOA
michael.ns.cloudflare.com dns.cloudflare.com 2397985855 10000 2400 604800 1800
Primary NS (mname)
michael.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2397985855
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
samara.ns.cloudflare.com
michael.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:67.218.88.70 ip4:67.218.88.75 ip4:199.36.164.0/22 ip4:149.72.1.193 ip4:167.89.94.248 ip4:168.245.67.11 ip4:168.245.25.116 include:spf.protection.outlook.com include:spf-westus.emailsignatures365.com include:customers.clickdimensions.com include:sendgrid.net include:mh.blackboard.com include:emsd1.com -all
📊 DNS lookups: 6/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
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
7 records- 90BDIMNVklPf8QBhiIyu2sViBILVLcGvCMNTlCqVsPSib2hpQFWXbYDedZrZRvmgKZjm0SxZ10DSiCX/AFxtxg==
- d365mktkey=JQf5RuWhk5VGZtJmhUxcMWcj7HTNwzv80irZIGqfwh4x
- ecu2pvb486idf7ivbq4sdao629
- eqda8pto9ufaj7ra838rmhqtvo
- google-site-verification=YNqqtoIu9THcHIeSK3nZicNDDyt8ejROTcWtm0Ib1Lg
- google-site-verification=jMgO--QyIRZTvtIab_7Z3OmYYqmGZrlwzaAVEtBIxHk
- SPFv=spf1 ip4:67.218.88.70 ip4:67.218.88.75 ip4:199.36.164.0/22 ip4:149.72.1.193 ip4:167.89.94.248 ip4:168.245.67.11 ip4:168.245.25.116 include:spf.protection.outlook.com include:spf-westus.emailsignatures365.com include:customers.clickdimensions.com include:sendgrid.net include:mh.blackboard.com include:emsd1.com -all
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