Custom connection host/port does not apply to file transfer host/port
Please note by far the quickest way to get a new feature is to file a Merge Request.
Description of the new feature
When configuring custom host and port for xmpp connection, settings does not apply to file transfer protocol so that file transfer keeps trying to connect @mydomainname:5000 instead of my-custom-ip:my-custom-file-transfer-port
Enhancement:
Add a new custom field in order to redefine host file transfer on port 5000 the same way you can redefine host xmpp on port 5222