[jmarneweck]

It has been a few years since I have dealt with Microsoft's postmasters team for email delivery issues but the link to to use to submit an email delivery issues is: http://go.microsoft.com/fwlink/?LinkID=614866

[joaopbnogueira]

Thanks, we have looked into this indeed, but the problem is that we don't really control the sending IPs as they are managed by Google.

I guess I'll try to submit a report anyway using Googles' outbound IPs.