7
records
Name Servers
TTL
5m
5m
5m
5m
s51.exacttarget.com. 300 IN NS dns1.p02.nsone.net. s51.exacttarget.com. 300 IN NS dns2.p02.nsone.net. s51.exacttarget.com. 300 IN NS dns3.p02.nsone.net. s51.exacttarget.com. 300 IN NS dns4.p02.nsone.net.
SOA Details
TTL
5m
SOA
Responsible
hostmaster.nsone.net
SOA
Serial
1679951115
SOA
Times
Refresh
2h
Retry
1h
Expire
14d
Minimum TTL
1h
s51.exacttarget.com. 300 IN SOA dns1.p01.nsone.net. hostmaster.nsone.net. 1679951115 7200 3600 1209600 3600
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
20m
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]
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.
s51.exacttarget.com. 1200 IN DMARC v=DMARC1;p=none;fo=1:d:s;sp=none;rua=mailto:[email protected],mailto:[email protected];ruf=mailto:[email protected]
SPF (Sender Policy Framework)
TTL
SPF
SPFv1
| Qualifier | Mechanism | Target / value | Valid | Details |
|---|---|---|---|---|
| + Pass | include |
|
||
| - Fail | all |
—
|
|
5m
s51.exacttarget.com. 300 IN TXT "v=spf1 include:cust-spf.exacttarget.com -all"