Canonical Names

TTL

IPv4 Addresses

TTL

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
1m
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

Aggregate DMARC reports (ZIP/XML). Optional but recommended for visibility.

No aggregate report URIs (RUA).
DMARC RUF

Forensic (per-failure) reports. Often omitted for privacy or volume.

No forensic report URIs (RUF).

DKIM

TTL
DKIM Selector mail
v=DKIM1
1m
DKIM Selector default
v=DKIM1
1m
DKIM Selector dkim
v=DKIM1
1m
DKIM Selector amazonses
v=DKIM1
1m
DKIM Selector s1
v=DKIM1
1m
DKIM Selector k1
v=DKIM1
1m
DKIM Selector s1024
v=DKIM1
1m
DKIM Selector s2
v=DKIM1
1m
DKIM Selector mandrill
v=DKIM1
1m
DKIM Selector spop1024
v=DKIM1
1m
DKIM Selector s2048
v=DKIM1
1m
DKIM Selector cm
v=DKIM1
1m
DKIM Selector smtp
v=DKIM1
1m
DKIM Selector selector1
v=DKIM1
1m
DKIM Selector k3
v=DKIM1
1m
DKIM Selector pp
v=DKIM1
1m
DKIM Selector selector2
v=DKIM1
1m
DKIM Selector spop2048
v=DKIM1
1m
DKIM Selector k2
v=DKIM1
1m
DKIM Selector google
v=DKIM1
1m