5
records
IPv4 Addresses
TTL
s22.coreserver.jp. 600 IN A 202.172.28.23
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
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).
s22.coreserver.jp. 300 IN DMARC v=DMARC1; p=none;
DKIM
TTL
DKIM
Selector
default
v=DKIM1
k=rsa
5m
Public Key
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA5DaFxYVcmGki...
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA5DaFxYVcmGkiTjnFyJuzWAvieTxrJGdN+Fu42CYOtk6KqdFY6q3oUWQEMiBUmFsYATuOPFuOQsXY+Z45XX6jC1JlO2dLMjRWXORd9cbqtzChLwBRguor3Vkh7w2Em66BWJbr1qKARGqk2aBTd+M+fkA0aumveqTCGoyC1VSvojrjXOpae8WZWwOJk7XDjuPcr6Aq2tIabpwG1jmlKWfbgX9OW9UQWFTal9U1W1j+BokhvSav5ojH6Yh7GTCiUgDvxFY+gmMMSmnFEQ3VYoFFwmddCTHYWdBTLDOjfpqH29TKYReS7PujcLkIOSbiAc5Bz6d12fm5GkK3YA/89O9DmwIDAQAB
s22.coreserver.jp. 300 IN DKIM v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA5DaFxYVcmGkiTjnFyJuzWAvieTxrJGdN+Fu42CYOtk6KqdFY6q3oUWQEMiBUmFsYATuOPFuOQsXY+Z45XX6jC1JlO2dLMjRWXORd9cbqtzChLwBRguor3Vkh7w2Em66BWJbr1qKARGqk2aBTd+M+fkA0aumveqTCGoyC1VSvojrjXOpae8WZWwOJk7XDjuPcr6Aq2tIabpwG1jmlKWfbgX9OW9UQWFTal9U1W1j+BokhvSav5ojH6Yh7GTCiUgDvxFY+gmMMSmnFEQ3VYoFFwmddCTHYWdBTLDOjfpqH29TKYReS7PujcLkIOSbiAc5Bz6d12fm5GkK3YA/89O9DmwIDAQAB
SPF (Sender Policy Framework)
TTL
SPF
SPFv1
| Qualifier | Mechanism | Target / value | Valid | Details |
|---|---|---|---|---|
| + Pass | a |
|
||
| + Pass | include |
|
||
| ~ Softfail | all |
—
|
|
20m
s22.coreserver.jp. 1200 IN TXT "v=spf1 a:s22.coreserver.jp include:mxr.valueserver.jp ~all"