Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
csub.edu
Yes
✓ Yes
Proofpoint
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-31 01:02:05 UTC · ↺ Refresh
MX Hostnames
- mxa-0000a801.gslb.pphosted.com
- mxb-0000a801.gslb.pphosted.com
MX Priorities
- mxa-0000a801.gslb.pphosted.com: 10
- mxb-0000a801.gslb.pphosted.com: 10
A / AAAA Records
- 104.40.0.56 ↩ csub.edu
Mail Server IPs
- 67.231.156.101 ↩ mx0b-0000a801.pphosted.com
- 148.163.156.102 ↩ mx0a-0000a801.pphosted.com
SOA Record
Raw SOA
gridmaster.csub.edu netops.csub.edu 1551629623 10800 3600 604800 3600
Primary NS (mname)
gridmaster.csub.edu
Admin Email (rname)
netops@csub.edu
Serial
1551629623
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns1.csub.edu
ns0.csub.edu
ns2.csub.edu
ns3.csub.edu
SPF Record
✓ Strict (-all)
v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 5 found
selector1._domainkey
selector2._domainkey
k1._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
18 records- smartsheet-site-validation=6llCNOTeOvk9qIUekk7Qg04m0wheHGAM
- 3P45B9Y0G1V4O7P2R8J10L55NOZU9Z6RED13TGAYV
- duo_sso_verification=bVjIka3K07sQCA8rwQDIR8WXF9Sf3Sso0YSFyxvz40UnQOUj5oJ2eFWi23Mx1ggU
- d365mktkey=WGFxl5c9ukaOx26iehWZyAMAe4foGRhJM2dIV8xcBSEx
- d365mktkey=c5xukwubhw4MzyDkqZ2wPVXrQfTwx7Lx8ygs9KaXbxUx
- d365mktkey=0a85WLalEJuxrgcDxIF4gWtDkTvPDdJweiujn62xeocx
- e2ma-verification=1qegb
- SPFv=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com -all
- jamf-site-verification=g8COndz6hXgH0CWx9D9Phw
- openai-domain-verification=dv-SZlpaZY9LmOtG4dF5svWfr3o
- adobe-idp-site-verification=9829062d566e84d82fc70a89032165458cbd61d09a11b5d6da205e82e93e3eb1
- MS=ms41141094.
- have-i-been-pwned-verification=75a49f134c06ee69123748d6e25b40e4
- pardot383022=caaa611f32874dddc6ca4c89ceb3f88d810ef4edae0744c2606c66aa1b9804c7
- amazonses:o+SbwnIdoJZzLnXitq1E7PB0IbZd4nkzf7g4LEOK6lE=
- e2ma-verification=egbfb
- e2ma-verification=2oseb
- amazonses:QAe+pSoh3ar/WoW9Vrq8zZCRqRIX+6N23n+rfKfnTlA=
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