Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
mmm.edu
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-19 02:46:28 UTC · ↺ Refresh
MX Hostnames
- mx2.hc2339-2.iphmx.com
- mx1.hc2339-2.iphmx.com
MX Priorities
- mx1.hc2339-2.iphmx.com: 10
- mx2.hc2339-2.iphmx.com: 20
A / AAAA Records
- 54.144.48.212 ↩ ec2-54-144-48-212.compute-1.amazonaws.com
Mail Server IPs
- 216.71.150.189 ↩ esa1.hc2339-2.iphmx.com
- 216.71.155.239 ↩ esa2.hc2339-2.iphmx.com
SOA Record
Raw SOA
mrbodnsmaster101.nss.crowncastle.com hostadmin.crowncastle.com 2020060725 10800 3600 2419200 300
Primary NS (mname)
mrbodnsmaster101.nss.crowncastle.com
Admin Email (rname)
hostadmin@crowncastle.com
Serial
2020060725
Refresh
10800s
Retry
3600s
Expire
2419200s
Minimum TTL
300s
Nameservers (NS)
ns2.hvdata.net
ns1.hvdata.net
SPF Record
✓ Strict (-all)
v=spf1 ip4:216.71.150.189 ip4:216.71.155.239 ip4:40.92.0.0/15 ip4:40.107.0.0/16 ip4:52.100.0.0/15 ip4:52.102.0.0/16 ip4:52.103.0.0/17 ip4:104.47.0.0/17 ip4:159.183.195.16 include:spf1.mmm.edu include:spf2.mmm.edu -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1; pct=100; adkim=s; aspf=s
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._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
8 records- jamf-site-verification=EX6iD7QSZ_CTleWS0tl0Nw
- skv6kGoN1k7J0wxH1xEgGpMed59ODGRFU9MPrBUQOrlF6MuSaffIEbVR2OyxkdAoEANZ9+EfsdrosZxPVSWQ0A==
- 7go68/u8EJIROSmwW/5Em2N9oX+xqRvnmfdoxF0gz7V4pis5S9Fzz13vWznetzGAZQ8mHFUxdkIMo7taCQV5ww==
- apple-domain-verification=JTTzKzGO1iduIiff
- google-site-verification=5KBhxuDX-JZcjCQnU6RWtg6Bvzc3xvh0DKiC9s1zn1I
- 3fn4g3y07j5xfv6w28js53sj0y5ltyc0
- SPFv=spf1 ip4:216.71.150.189 ip4:216.71.155.239 ip4:40.92.0.0/15 ip4:40.107.0.0/16 ip4:52.100.0.0/15 ip4:52.102.0.0/16 ip4:52.103.0.0/17 ip4:104.47.0.0/17 ip4:159.183.195.16 include:spf1.mmm.edu include:spf2.mmm.edu -all
- adobe-idp-site-verification=52ccd8fad4cefd16b28ea897d42da635325465ca123f4bfd1925c3c2ea43051e
Full email verification for mmm.edu
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