4
records
Mail Servers
TTL
MX
—
10
5m
sendmail.bigweb.co.jp. 300 IN MX 10 sendmail.bigweb.co.jp.
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
5m
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.
sendmail.bigweb.co.jp. 300 IN DMARC v=DMARC1; p=quarantine; pct=100; rua=mailto:[email protected]; ruf=mailto:[email protected]
DKIM
TTL
DKIM
Selector
default
v=DKIM1
k=rsa
2m
Public Key
MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC8QKgNT+dmV90/t+HT...
MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC8QKgNT+dmV90/t+HTRAhh9FeenDRHpGHt+rkHpiXAGZd1kt4Z3iCGvwj3k+ARQsn1RUOTzHFVWl+dPfo8W02zsT0ZZr+9qsBfXJ3uPB+vefXWjIkNtl1D0iDqwDS5AnhnBCpYhceEWaZjam6CoeEbd+iFM61oW+ybRHOg6/j+BQIDAQAB
sendmail.bigweb.co.jp. 120 IN DKIM v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC8QKgNT+dmV90/t+HTRAhh9FeenDRHpGHt+rkHpiXAGZd1kt4Z3iCGvwj3k+ARQsn1RUOTzHFVWl+dPfo8W02zsT0ZZr+9qsBfXJ3uPB+vefXWjIkNtl1D0iDqwDS5AnhnBCpYhceEWaZjam6CoeEbd+iFM61oW+ybRHOg6/j+BQIDAQAB
SPF (Sender Policy Framework)
TTL
SPF
SPFv1
| Qualifier | Mechanism | Target / value | Valid | Details |
|---|---|---|---|---|
| + Pass | include |
|
||
| + Pass | ip4 |
|
||
| + Pass | a |
|
||
| + Pass | mx |
—
|
|
|
| - Fail | all |
—
|
|
5m
sendmail.bigweb.co.jp. 300 IN TXT "v=spf1 include:amazonses.com +ip4:54.65.210.107 +a:sendmail.bigweb.co.jp +mx -all"