Hi Abhishek,
First thing is Your are trying to send mail from Queue.
For Queue You have got Outgoing Success.
And now you have pending send message status.
Can you please give me the details of your configuration and make some below changes.
1) Is your CRM is On-line CRM or On-Premise CRM ??
2) What is the installed Update roll-up of CRM 2011 EMail Router.
3) Check Firewall is Blocking your Outgoing port !!
4) Configured Email Router Outgoing with Exchange Online Or SMTP.....??
5) On which port You are Running Email router for Outgoing Profile....???
6) What is error message stating in Event Viewer log...??
Vinay Kumar.