Parser deduplicates reports by Report-ID only, but should consider the reporter, too

[mwander]

dmarcts has the useful feature to overwrite or ignore duplicate reports. It identifies duplicate reports via Report-ID:

    # see if already stored
    my $sth = $dbh->prepare(qq{SELECT org, serial FROM report WHERE reportid=?});
    $sth->execute($id);

However, different reporters might use the same Report-ID. I have observed this in the wild with IDs in the form of "reportdomain.starttime.endtime".

To ensure uniqueness, the deduplication should also consider the Reporter Orgname. An alternative to org_name from the XML is the Submitter-Domain from the subject. Either of them is fine.
Better yet, deduplicate over the following three fields: Report-ID, Reporter Orgname (or Submitter-Domain), and Report-Domain.