Keywords: Redmine - Virtual Machines - Technical issue - Email configuration (SMTP)
Redmine 3.3.0-1 running on windows server 2012 R2.
I recently upgraded our client from Exchange 2010 to Exchange 2016. Since then Redmine is no longer able to send emails, it generates a certificate mismatch error (hostname XXX does not match the server certificate). I have checked the configuration.yml file and the mail server is in the format of mail.domain.com and no other systems or services generate an SSL error.
I modified the Configuration.YML file to include "enable_starttls_auto: false" after restarting the Redmine services through the Redmine stack manager, I am no longer able to login. I get a username/password is invalid error. If i restart the whole server, redmine does not start. All services are running but the webpage shows "your application has not started yet"
I have been able to roll back my changes but the results are consistent.
This is an extract of the configuration file: