A colleague needs to email me a ZIP file. He's using OSX and he compresses the folder into a single file. Due to a firewall on my corporate network, all ZIP files are being stripped. I don't have the ability to disable this firewall. I asked my colleague to create the ZIP file and then rename it, giving it an arbitrary extension, I would then re-name it back once it made it past the firewall and uncompress.
He did so, and I ended up with a file called "setup.blah.zip"
I told him to turn off whatever setting was enforcing the ZIP extension anyway, he said he knows of no option to prevent this. He says OSX Mail is doing it.
I don't know Mac's, so bear with me, but if anybody knows what steps I can provide to him so that he can send me the ZIP file with an alternate extension, that would be very helpful.