The service could not bind instance 1. the data is the error code. smtpsvc

The following event ID message is logged in the System log:

Source: SMTPSVC
Event ID: 115
Description:
The service could not bind instance 1. The data is the error code.
For additional information specific to this message please visit the Microsoft Online Support site located at: http://search.support.microsoft.com/search/?adv=1.

Causes: Port Conflicts

Solution 1 : 
Check SMTP services uses port 25 or 465.
Make sure firewall allow port 25 or 465 as per your configuration.
Configure SMTP to use port 25 or 465.

Go to Internet Information Services (IIS) 6.0 Manager
Select Server ( local computer)
Select SMTP Virtual server
Right Click
Properties
General
IP Address : All Unassigned
Advanced..
Click
Select All Unassigned
Edit
Specify your port 25 or 465
OK

Now start Virtual server :)

Solution 2 : https://support.microsoft.com/en-us/kb/322023

SMTP EMAIL SETTINGS ISSUES AND SOLUTION

• Setup and Configure the SMTP Service
• The service could not bind instance 1. the data is the error code.
• SMTP: Err Msg: 503 Bad Command Sequence