`bounces.txt` does not include Outlook-specific DMARC error

[titanism]

A response message of the following should be classified as dmarc category with reject however it's considered reject with other category:

550 5.7.509 Access denied, sending domain [SOME.DOMAIN.ORG] does not pass DMARC verification and has a DMARC policy of reject. <..... continued message .....>",