Horde webmail - image html signature issue

Hi there,

So, I'm using Horde and I'm trying to set an image in my html signature. I can get the text, links etc to work.

Whenever I add an image it shows in the actual signature settings page, then when I test it by email one of my other accounts. It shows a broken link box.

So, I'm using my cpanel file manager to upload my image. As you can see, it's called mail_sig.jpg

https://gyazo.com/2358b6835969e811f056bcf422294179

And, this is how I'm getting the url for my mail signature image.

https://gyazo.com/0e0af77dd4e0cd44aeb9ddd56850059d

Again, as you can see, the image is visible in my signature settings. But whenever I test it and actually send an email out. #1 the sig is not visible when composing a new message. And #2 the image shows a broken link when receiving an email.

Please give me a hand here. Thanks,

Dan