I'm getting this error "The remote server returned an error: (407) Proxy Authentication Required."

I noticed in this post that port 80 needs to be enabled.

Apparently, my company network does not allow this port. Instead IE is using port 8080 and port 9080. Any chance the program could be revised to allow port 8080 and/or 9080?

Our IT dept. appears to have port 80 locked down. Only MS Outlook is accessing that port.