Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
gcisd.net
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-23 05:04:08 UTC · ↺ Refresh
MX Hostnames
- usb-smtp-inbound-1.mimecast.com
- usb-smtp-inbound-2.mimecast.com
MX Priorities
- usb-smtp-inbound-2.mimecast.com: 10
- usb-smtp-inbound-1.mimecast.com: 10
A / AAAA Records
- 34.238.178.141 ↩ ec2-34-238-178-141.compute-1.amazonaws.com
Mail Server IPs
- 170.10.150.242 ↩ usb-smtp-delivery-2.mimecast.com
- 170.10.152.242 ↩ usb-smtp-delivery-2.mimecast.com
SOA Record
Raw SOA
nocdns.gcisd.net jason.brown.gcisd.net 2025101608 10800 3600 604800 86400
Primary NS (mname)
nocdns.gcisd.net
Admin Email (rname)
jason@brown.gcisd.net
Serial
2025101608
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
86400s
Nameservers (NS)
nocdns.gcisd.net
drdns.gcisd.net
SPF Record
✓ Strict (-all)
v=spf1 ip4:216.213.224.82 ip4:168.245.17.251 include:sendgrid.net include:bmesend.com include:usb._netblocks.mimecast.com ip4:199.36.164.0/22 include:spf.dynect.net include:_spf.psm.knowbe4.com include:_spf.qualtrics.com -all
📊 DNS lookups: 6/10
✓ 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
✓ 3 found
google._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 392 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
13 records- 0ed1fe018a541eba4b87fc485eac07200b29aac882
- apple-domain-verification=vIk2JyQ8BzxQ3lAM
- 1password-site-verification=EKLNGKORLNDFXG27KFPMXA4OU4
- google-site-verification=7otC_IF1PVOBMeYXGrl2qKsOETQtSVNxJBn1_EWJ4q8
- MS=ms39105624
- autodesk-domain-verification=VPPzwwjB5eO-rg93gAdH
- 21607ca7f39e1731c9837da2c2a5bea5deda1d7888cf5e32feddde77ce9fb13d
- apple-domain-verification=4EFVOkdpOcTSeW5I
- ee68e76a-59a0-4312-8c5e-519a3bc5668e
- citrix-verification-code=699635a6-0f35-4b89-a4c6-ccf36376b812
- fq487w84s7n41dc5qwy6g02p5t2f8yf8
- adobe-idp-site-verification=b57770fb427e6344232dff9b1d5cc93dfcb3ae02876c8af04e286f7e65aeaee1
- SPFv=spf1 ip4:216.213.224.82 ip4:168.245.17.251 include:sendgrid.net include:bmesend.com include:usb._netblocks.mimecast.com ip4:199.36.164.0/22 include:spf.dynect.net include:_spf.psm.knowbe4.com include:_spf.qualtrics.com -all
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