I am trying to migrate my Confluence server to live in a vm hosted in Google Cloud Platform.
So far so good, I got mostly everything working, except my mail setup.
I read in google's documentation that those ports are blocked due to security issues and past bad experiences, see here: https://cloud.google.com/compute/docs/tutorials/sending-mail/.
Google Compute Engine does not allow outbound connections on ports 25, 465, and 587. By default, these outbound SMTP ports are blocked because of the large amount of abuse these ports are susceptible to
Has anybody had any luck with similar problems?