Rails 3, mail and OpenSSL problems

I keep getting this error in my production enviroment

OpenSSL::SSL::SSLError (hostname was not m开发者_如何转开发atch with the server certificate)

I really don't know much about certificates. I have configured rails to use sendmail. Sendmail is working well in other php applications on the server. I use Phusion Passenger. I also have a redmine-app which uses sendmail and also works fine (but it runs rails 2.x) Any idea how to solve this?

This means the SSL Certificate installed on the mail server did not match its hostname.

You can disable these exceptions, but then you are vulnerable to man-in-the-middle attacks.

The other option is to get a proper SSL Certificate (or install it correctly) for your mail server.

For more on SSL Certs I suggest superuser.com