4
records
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
10m
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
mailto:[email protected]
Forensic (per-failure) reports. Often omitted for privacy or volume.
info.bt.com. 600 IN DMARC v=DMARC1; p=reject; fo=1; pct=100; rua=mailto:[email protected]; ruf=mailto:[email protected]
DKIM
TTL
DKIM
Selector
default
v=DKIM1
k=rsa
10m
Public Key
MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCpDnWfra2D2hDUtl+6...
MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCpDnWfra2D2hDUtl+6ioJlEevbzrAN4xel+Sc4VnHK3mhPJvkTUfFpoScZuTH0f+gsqkiOhbog6pENcP3WgwXUYqrZAgRiNEHgsYiwqn589je2kmcV8xPD68FjWvjT43hHXfzEcJd8tC8zdakcaN/Uv6BjoiV6rPSBHr9cM/LwdQIDAQAB
info.bt.com. 600 IN DKIM v=DKIM1; g=*; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCpDnWfra2D2hDUtl+6ioJlEevbzrAN4xel+Sc4VnHK3mhPJvkTUfFpoScZuTH0f+gsqkiOhbog6pENcP3WgwXUYqrZAgRiNEHgsYiwqn589je2kmcV8xPD68FjWvjT43hHXfzEcJd8tC8zdakcaN/Uv6BjoiV6rPSBHr9cM/LwdQIDAQAB
SPF (Sender Policy Framework)
TTL
SPF
SPFv1
| Qualifier | Mechanism | Target / value | Valid | Details |
|---|---|---|---|---|
| + Pass | include |
|
||
| ~ Softfail | all |
—
|
|
10m
info.bt.com. 600 IN TXT "v=spf1 include:bt.com ~all"