We currently need some help setting up email sending from one of our Rails apps via our own Microsoft Exchange SMTP server. It seems that the Heroku IPs are blocked by Trend Micro. We are having this message:
"Your email messages have been blocked by the recipient OR by Trend Micro Email Reputation Service. Contact the recipient or his/her administrator using alternate means to resolve the issue"
What can we do in this case, please give us some guidelines. Thanks