Do you mean Adobe Acrobat 9.4?
If so, support for that product ended in June of 2013. There've been lots of improvements to signature workflows since then.
I suspect that there are still preferences for your colleague on that system. Uninstalling and reinstalling wouldn't clear those. You probably need to clear your registry of all Acrobat entries. It's also possible that the return address is coded into the PDF. Without the file, it's hard to tell.
Thanks Joel. It is Adobe Acrobat 9 Standard version 9.4.5. The document was created and issued for signature by me so I am not sure how it would even know my colleges email address. I created the document in both Adobe and Nova PDF with the same result. Can you advise how to clear all registries of all Acrobat entries.
There are a lot of registry tools but the ones you need to delete, you may not even have access to. Check with your IT department for what they'd recommend.
Also, try starting with a new document from scratch and see what happens.
I have tried with several new documents and test pages with the same result. I have also emailed the document to another colleague and had him distribute it for signing and the signed documents are returned to him OK.
Can you post an example file somewhere? Dropbox perhaps?
Sorry for the delay in getting back to you I have been away on business. I have put a document in the drop box at the following URL: