github.com/cs3org/reva/v2@v2.27.7/changelog/1.0.0_2020-07-28/smtp-headers.md (about)

     1  Enhancement: Add required headers to SMTP client to prevent being tagged as spam
     2  
     3  Mails being sent through the client, specially through unauthenticated SMTP were
     4  being tagged as spam due to missing headers.
     5  
     6  https://github.com/cs3org/reva/pull/970