[exim] exim doing client auth on office365 smtp

I had a situation today where i need that exim act as client on office365 server with authentication.
So, i have configured two authenticators (one for PLAIN and other for LOGIN) that will be sent after TLS.
The problem that i found is that the office365 server isn't doing the correct announce of AUTH mechanisms....
Running exim in debug mode i saw this:
  SMTP<< 250-pod51028.outlook.com Hello [189.74.52.32]         250-SIZE 36700160         250-PIPELINING         250-DSN         250-ENHANCEDSTATUSCODES         250-STARTTLS         250-AUTH         250-8BITMIME         250-BINARYMIME         250 CHUNKING
They are announcing only that has auth capability, right? So... the exim don't find the correct authenticator data to use:
207.46.4.237 in hosts_require_auth? yes (matched "pod51028.outlook.com")scanning authentication mechanismsskipping server_plain authenticator: not configured as a clientskipping server_login authenticator: not configured as a client  SMTP>> QUIT
So... My doubt is... There are a way to configure exim to use for example LOGIN mechanism as fallback when it don't find any valid mechanism for auth as client? Someone had the same problem? How to fix this? Or maybe this is something to send to bug list?
Thanks