Redmine

Please help me on this. Its really important.
My test email is getting generated but not getting send to my domain. Here is the log file excerpt:
_loading from application: custom_fields_helper
Setting Load (0.000000) SELECT * FROM `settings` WHERE (`settings`.`name` = 'default_language') LIMIT 1
Setting Load (0.015600) SELECT * FROM `settings` WHERE (`settings`.`name` = 'mail_from') LIMIT 1
Setting Load (0.000000) SELECT * FROM `settings` WHERE (`settings`.`name` = 'host_name') LIMIT 1
Setting Load (0.000000) SELECT * FROM `settings` WHERE (`settings`.`name` = 'app_title') LIMIT 1
Setting Load (0.000000) SELECT * FROM `settings` WHERE (`settings`.`name` = 'protocol') LIMIT 1
Setting Load (0.000000) SELECT * FROM `settings` WHERE (`settings`.`name` = 'plain_text_mail') LIMIT 1
Setting Load (0.015600) SELECT * FROM `settings` WHERE (`settings`.`name` = 'emails_footer') LIMIT 1
UserPreference Load (0.015600) SELECT * FROM `user_preferences` WHERE (`user_preferences`.user_id = 1) LIMIT 1
UserPreference Columns (0.015599) SHOW FIELDS FROM `user_preferences`
Setting Load (0.000000) SELECT * FROM `settings` WHERE (`settings`.`name` = 'bcc_recipients') LIMIT 1
Sent mail to shubham_chakraborty@infosys.com

From: redmine@example.net

To: shubham_chakraborty@infosys.com

Subject: Redmine test

Mime-Version: 1.0

Content-Type: text/plain; charset=utf-8

Precedence: bulk

X-Mailer: Redmine

Auto-Submitted: auto-generated

X-Redmine-Site: Redmine

X-Redmine-Host: localhost:3001

This is a test email sent by Redmine.
Redmine URL: http://localhost:3001/

--
You have received this notification because you have either subscribed to it, or are involved in it.
To change your notification preferences, please click here: http://hostname/my/account
Redirected to http://localhost:3001/settings/edit?tab=notifications
Completed in 1.82515 (0 reqs/sec) | DB: 0.10920 (5%) | 302 Found [http://localhost/admin/test_email]
checking plugin 'engines' for 'application_helper'
...._

EMAIL.YML
_# Outgoing email settings

production:
delivery_method: :smtp
smtp_settings:
address: 172.21.5.10
port: 25
domain: infosys.com
authentication: :none

development:
delivery_method: :smtp
smtp_settings:
address: 172.21.5.10
port: 25
domain: infosys.com
authentication: :none
_

*My environment.rb is untouched.
Plz help as to which step i am missing out here.

Here is my redmine about:*
_C:\redmine>ruby script\about
About your application's environment
Ruby version 1.8.6 (i386-mingw32)
RubyGems version 1.3.1
Rails version 2.1.2
Active Record version 2.1.2
Action Pack version 2.1.2
Active Resource version 2.1.2
Action Mailer version 2.1.2
Active Support version 2.1.2
Application root C:/redmine
Environment development
Database adapter mysql
Database schema version 101

About your Redmine plugins
Issue Importer 0.3.1_