tonij67@hotmail.com wrote:
> Hey all,
>
> I am working on a project that involves zipping up text files on
> Solaris 9 using Zip 2.3 and sending them over to an OS/390. I don't
> work on the 390 so all the information I get is from a third party.
>
> Anyway they are telling me that once they get the file we zip up they
> cannot open it. They are using a utility called InfoZip and it claims
> it is not a valid zip file. My first response was to ask them to try
> another unzip, so they took the file off their 390 and tried Winzip;
> same errors.
>
> I wondered if maybe there was a problem with the transfer, so I copied
> a zip over to the 390 then back to the Solaris box. I was able to
> unzip it with no problems. Then I pulled it down to a Win desktop and
> used Winzip; still all good. But if they email me back the same zip
> file that I was able to unzip before they got a hold of it, I can't
> unzip it either.
>
> Am I missing something simple here? I ran a chksum on the file before
> I transferred it and after and the numbers are identical.
>
> Anyone have experience with Solaris - 390 and how each handles zip
> files?
>
Although I have no direct experience with the setup you describe I do
have a suggestion. Since you've tested copying to the 390 and back, but
the problem files were emailed, I'd suggested looking into the
possibility of your mail exchanger and/or antivirus program mangling the
files.

Can you zip and copy, not email, to a location the 3rd party can test?
Also, if they are using Outlook to receive mail be aware that Outlook
often blocks or otherwise interferes with .zip files.