thanks for implementing it.
I asked for it about a month ago.
but its not working.
it links the gravatar-default.png to http://i1.wp.com//uploads/gravatar-default.png -> not a valid link
Thanks should be fixed in https://github.com/designcreateplay/NodeBB/commit/1a9ab9d1d2fc273eb7875a40e7bde6d9dec7ac5c, and yes images need to be accessible on port 80 or 443.0 barisusakli committed to designcreateplay/NodeBB fixes default gravatar images if they are uploaded locally