Do I need an SSL certificate to use ActionMailer 2.2.2?

Hi guys - I'm sorry to post about this issue again but after several
days I still cannot get ActionMailer working and I've been through
every tutorial/forum looking for the answer.

I know ActionMailer now requires SSL validation, does that mean I need
to purchase an SSL certificate before I can send emails?

If not, is there anyone out there who can help me set up my mailer to
work?

http://groups.google.co.uk/group/rubyonrails-talk/browse_thread/thread/db2040e420d94c17?hl=en

your's despairingly,

Gavin

I was under the impression that this was one of the changes in Rails
2.2?

http://journal.dedasys.com/2008/12/08/openssl-ssl-sslerror-hostname-was-not-match-with-the-server-certificate

I get the message:
OpenSSL::SSL::SSLError: hostname was not match with the server
certificate

When trying to use the actionmailer settings that everyone suggests?

Does your app run in Rails 2.2.2 Fernando?