I am using PHP to send a HTML newsletter email and I am having problems with the images in the email. In Outlook 2013 the images display perfectly fine but in Outlook.com some of the images do not display.
In the email there are two images: one is the logo and the other is the profile picture of the user. The URL for the logo is
http://220.127.116.11/~ramsay6/leadsheet/resources/leadsheet_logo.png and it does not work.
The funny part is when the profile picture URL is
http://cdn.icons8.com/storage/iOS7/PNG/50/Users/user_male-50.png (remote site) the picture displays, but when the URL is
http://18.104.22.168/~ramsay6/leadsheet/accountimg/1-ramsay.png it does not display.
Outlook.com uses a proxy to access the pictures. Could the URL of my website be causing the error?