I have an e-mail with an attachment that is being saved with an incomplete file name. The part of the name after the first space is missing, including the extension. The raw message data looks like this:

--Apple-Mail-10--296320181 Content-Transfer-Encoding: base64 Content-Type: application/pdf; x-unix-mode=0644; name=1234 abc def.pdf X-WatchGuard-AntiVirus: scanned '1234abcdef.pdf'. clean action=allow

[large chunk of encoded data here]

But the file is saved as "1234". When I open the e-mail in Outlook Express, I see the full file name with the extension. I have tested a few other e-mail parsers, and they also save the file as just "1234" without the extension. Other e-mails with attachments that include spaces seem to work fine. Is the e-mail formatted incorrectly? Is the number at the beginning of the file name causing this?