4
records
Canonical Names
TTL
5m
mail.thoughtindustries.com. 300 IN CNAME u807214.wl215.sendgrid.net.
Mail Servers
TTL
20m
mail.thoughtindustries.com. 1200 IN MX 20 mx.sendgrid.net.
DMARC
TTL
DMARC
Policy
Organizational policy (p): how receivers treat mail that fails aligned DMARC checks — none (monitor only), quarantine (often junk), or reject (block).
none
quarantine
reject
30s
DMARC
Subdomain Policy
Subdomain policy (sp): when set, it applies to hostnames below this domain instead of p; if omitted, subdomains inherit the organizational policy.
none
quarantine
reject
DMARC
Percentage
pct: share of mail that gets quarantine/reject; 100 = all failing messages (default).
100
DMARC
RUA
mailto:[email protected]
Aggregate DMARC reports (ZIP/XML). Optional but recommended for visibility.
DMARC
RUF
Forensic (per-failure) reports. Often omitted for privacy or volume.
No forensic report URIs (RUF).
mail.thoughtindustries.com. 30 IN DMARC v=DMARC1; p=none; pct=100; rua=mailto:[email protected]; sp=none; aspf=r;
SPF (Sender Policy Framework)
TTL
SPF
SPFv1
| Qualifier | Mechanism | Target / value | Valid | Details |
|---|---|---|---|---|
| + Pass | ip4 |
|
||
| + Pass | ip4 |
|
||
| - Fail | all |
—
|
|
20m
mail.thoughtindustries.com. 1200 IN TXT "v=spf1 ip4:167.89.97.235 ip4:168.245.34.51 -all"