[Vacation-list] from address not being handled correctly in some cases

Hi all,

I recently filed a support request via sourceforge, but figured I would post here as well in case that wasn't being monitored.
http://sourceforge.net/tracker/?func=detail&aid=3520707&group_id=3852&atid=203852


I am currently running RHEL6 using 1.2.7.1 compiled locally. For the most part, using vacation is working very well. Every once in a
while though, I get a bounceback due to vacation sending a response to an incorrect address. This appears to happen when a header
contains a From or Reply-To formatted as follows.

From: Testy McGee <username@ foobar.com>
Reply-To: Testy McGee <use...@fo...>
To: bg...@si...

I then get a bounce like the following:
This is the mail system at host mail.simons-rock.edu.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

The mail system

<"Testy McGee"@simons-rock.edu> (expanded from <"Testy McGee">): unknown
user: "testy mcgee"

Any idea what might cause this behavior?