Hello,

The RFC says that:

A Report Receiver that is willing to receive reports for any domain can use a wildcard DNS record. For example, a TXT resource
record at "*._report._dmarc.example.com" containing at least "v=DMARC1" confirms that example.com is willing to receive DMARC reports for any domain.

There are two possible interpretations of this paragraph. One is that to allow receiving reports from all domains the recipient domain should add a wildcard DNS record (not with a literal asterisk in the domain name) so that a query for any domain under _report._dmarc will return the same.

The second interpretation is that a DNS record with a literal asterisk should be added. Opendmarc (and checkdmarc) is checking for a domain with a literal asterisk. Are you sure this is a correct behavior?