OpenSSL certificate error in sending email using gmail smtp

Hello,

I’m getting this error in email deliver -

OpenSSL::SSL::SSLError: hostname does not match the server certificate
from /usr/local/lib/ruby/1.9.1/openssl/ssl-internal.rb:129:in
post_connection_check' from /usr/local/lib/ruby/1.9.1/net/smtp.rb:585:intlsconnect’
from /usr/local/lib/ruby/1.9.1/net/smtp.rb:560:in do_start' from /usr/local/lib/ruby/1.9.1/net/smtp.rb:519:instart’
from
/home/deployer/bundle/ruby/1.9.1/gems/mail-2.5.4/lib/mail/network/delivery_methods/smtp.rb:112:in
deliver!' from /home/deployer/bundle/ruby/1.9.1/gems/mail-2.5.4/lib/mail/message.rb:2129:indo_delivery’
from
/home/deployer/bundle/ruby/1.9.1/gems/mail-2.5.4/lib/mail/message.rb:232:in
block in deliver' from /home/deployer/bundle/ruby/1.9.1/gems/actionmailer-4.0.2/lib/action_mailer/base.rb:456:inblock in deliver_mail’
from
/home/deployer/bundle/ruby/1.9.1/gems/activesupport-4.0.2/lib/active_support/notifications.rb:159:in
block in instrument' from /home/deployer/bundle/ruby/1.9.1/gems/activesupport-4.0.2/lib/active_support/notifications/instrumenter.rb:20:ininstrument’
from
/home/deployer/bundle/ruby/1.9.1/gems/activesupport-4.0.2/lib/active_support/notifications.rb:159:in
instrument' from /home/deployer/bundle/ruby/1.9.1/gems/actionmailer-4.0.2/lib/action_mailer/base.rb:454:indeliver_mail’
from
/home/deployer/bundle/ruby/1.9.1/gems/mail-2.5.4/lib/mail/message.rb:232:in
deliver' from (irb):13 from /home/deployer/bundle/ruby/1.9.1/gems/railties-4.0.2/lib/rails/commands/console.rb:90:instart’
from
/home/deployer/bundle/ruby/1.9.1/gems/railties-4.0.2/lib/rails/commands/console.rb:9:in
start' from /home/deployer/bundle/ruby/1.9.1/gems/railties-4.0.2/lib/rails/commands.rb:62:in<top (required)>’
from script/rails:6:in `require’

I’m on CentOS 6.5 using Ruby 1.9, Rails 4.0. I have upgraded to Ruby 2.0
but the error persists. openssl version is this: “OpenSSL 1.0.1e-fips 11
Feb 2013”

Anyone had a similar problem before?
Many thanks,
Abhishek