3
records
Canonical Names
TTL
20m
m.lessonly.com. 1200 IN CNAME u246655.wl156.sendgrid.net.
Mail Servers
TTL
20m
m.lessonly.com. 1200 IN MX 20 mx.sendgrid.net.
SPF (Sender Policy Framework)
TTL
SPF
SPFv1
| Qualifier | Mechanism | Target / value | Valid | Details |
|---|---|---|---|---|
| + Pass | ip4 |
|
||
| - Fail | all |
—
|
|
20m
m.lessonly.com. 1200 IN TXT "v=spf1 ip4:167.89.73.35 -all"