An NS, MX or SRV record points to a name that is a CNAME.

ZONE_TARGET_IS_CNAME · Severity: Warning

• WarningZONE_TARGET_IS_CNAME

  An NS, MX or SRV record points to a name that is a CNAME.

  The target of NS, MX and SRV records must be a name with address records, not an alias (RFC 2181 section 10.3, RFC 2782). Many mail servers and resolvers refuse to follow the CNAME.

  Recommendation: Point the record at the host name the CNAME leads to.

Reported by

• Zone file checker

Available through the API

• Zone file checker API

Related findings

• Warning ZONE_TARGET_NO_ADDRESS An NS, MX or SRV target inside the zone has no address record.
• Warning ZONE_TTL_MISMATCH Records of one name and type have different TTLs.
• Error ZONE_TTL_OUT_OF_RANGE A TTL is larger than DNS allows.
• Info ZONE_TTL_UNUSUAL A TTL is below one minute or above one week.
• Error ZONE_CNAME_AT_APEX The zone apex has a CNAME record.
• Error ZONE_CNAME_WITH_OTHER_DATA A name has a CNAME and other records at the same time.

All findings