OpenArc deferres a mail if it contains an A-R header that cannot be parsed.
As there are currently a lot of mails with a malformed A-R header sent by Hotmail/Outlook.com it might be a good idea to just ignore A-R headers that cannot be parsed.
Another problem:
OpenArc cannot parse this valid but empty A-R header:
Authentication-Results: authservid; none
OpenArc deferres a mail if it contains an A-R header that cannot be parsed. As there are currently a lot of mails with a malformed A-R header sent by Hotmail/Outlook.com it might be a good idea to just ignore A-R headers that cannot be parsed.
Another problem: OpenArc cannot parse this valid but empty A-R header:
Authentication-Results: authservid; none