Step 1 Choose "Settings" and then "Mail"
Step 2 Click on "Accounts"
Step 3 Choose the account you want to change
Step 4 Select the server under "Primary Server"
Step 5 Enter “mysmtp.com” in “Host name” and e-mail address from setup mail in "Username"
Password from Setup mail is entered in "Password".
In the "Server Port" field input "587".
Then choose "Authentication"
Step 6 Choose "Password"