Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
roberts.edu
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-17 18:59:57 UTC · ↺ Refresh
MX Hostnames
- aspmx.l.google.com
- alt3.aspmx.l.google.com
- alt2.aspmx.l.google.com
- alt4.aspmx.l.google.com
- alt1.aspmx.l.google.com
MX Priorities
- alt1.aspmx.l.google.com: 5
- alt2.aspmx.l.google.com: 5
- alt3.aspmx.l.google.com: 10
- alt4.aspmx.l.google.com: 10
- aspmx.l.google.com: 1
A / AAAA Records
- 13.107.246.40
- 13.107.213.40
- 2620:1ec:bdf::40
- 2620:1ec:46::40
Mail Server IPs
- 108.177.123.26 ↩ lcscld-in-f26.1e100.net
- 2800:3f0:4003:c0f::1a (no PTR)
- 172.253.116.26 ↩ dj-in-f26.1e100.net
- 2a00:1450:400b:c02::1a ↩ dj-in-f26.1e100.net
- 192.178.223.27 ↩ yulhrs-in-f27.1e100.net
- 2a00:1450:4009:c0f::1a ↩ yulhrs-in-f26.1e100.net
- 173.194.76.26 ↩ ws-in-f26.1e100.net
- 2a00:1450:400c:c00::1a ↩ ws-in-x1a.1e100.net
- 142.251.16.27 ↩ bl-in-f27.1e100.net
- 2607:f8b0:4004:c1d::1a ↩ ww-in-f26.1e100.net
SOA Record
Raw SOA
ns11.constellix.com dns.constellix.com 2015010434 43200 3600 1209600 180
Primary NS (mname)
ns11.constellix.com
Admin Email (rname)
dns@constellix.com
Serial
2015010434
Refresh
43200s
Retry
3600s
Expire
1209600s
Minimum TTL
180s
Nameservers (NS)
ns41.constellix.net
ns51.constellix.net
ns61.constellix.net
ns11.constellix.com
ns21.constellix.com
ns31.constellix.com
SPF Record
✓ Strict (-all)
v=spf1 +ip4:216.37.18.6 ip4:38.117.94.94 ip4:199.91.141.2 ip4:206.107.42.3 ip4:206.107.42.4 ip4:3.93.157.0/24 +ip4:204.8.10.114 ip4:113.29.23.222 ip4:66.102.0.0/20 ip4:74.125.0.0/16 ip4:35.191.0.0/16 ip4:193.240.184.6 ip4:193.240.184.7 ip4:199.91.136.26 ip4:199.91.136.28 ip4:199.91.140.26 ip4:206.79.10.196 ip4:199.91.140.22 ip4:199.91.136.22 ip4:149.72.0.0/16 ip4:199.91.139.23 ip4:54.240.121.247 ip4:54.240.121.248 ip4:199.91.139.22 include:_spf.google.com include:_spf0000000.roberts.edu -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
google._domainkey
✓ Public key: 253 chars (valid)
✓ DKIM properly configured for selector: google
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 +ip4:216.37.18.6 ip4:38.117.94.94 ip4:199.91.141.2 ip4:206.107.42.3 ip4:206.107.42.4 ip4:3.93.157.0/24 +ip4:204.8.10.114 ip4:113.29.23.222 ip4:66.102.0.0/20 ip4:74.125.0.0/16 ip4:35.191.0.0/16 ip4:193.240.184.6 ip4:193.240.184.7 ip4:199.91.136.26 ip4:199.91.136.28 ip4:199.91.140.26 ip4:206.79.10.196 ip4:199.91.140.22 ip4:199.91.136.22 ip4:149.72.0.0/16 ip4:199.91.139.23 ip4:54.240.121.247 ip4:54.240.121.248 ip4:199.91.139.22 include:_spf.google.com include:_spf0000000.roberts.edu -all
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