Re: DMARC Aggregate reports - false positives

[Kenneth Porter]

Mine don't get reported as spam. But I'm getting daily reports from 
mimecast.org that claim to be "Content-Type: application/gzip" but have 
file extension .zip. Examination finds that they're really PK zip files. 
So the script I use to process them tosses them as malformed. The source 
domain has no way to contact them to inform them of the error.