Extra line breaks in mail headers

I'm getting emails from my Galleries with extra line breaks in the headers...

Delivered-To: 
Received: (qmail 14592 invoked by uid 33); 26 Apr 2005 03:15:30 -0000
Message-ID: <20050426031530.14591.qmail@cv.org>
To: 
Subject: [Gallery] Test email from Gallery
Date: Mon, 25 Apr 2005 20:15:30 -0700

From: Andy's Gallery Administrator <andy@cv.org>
Reply-To: <andy@cv.org>
X-GalleryRequestIP: 64.36.6.70

MIME-Version: 1.0

Content-type: text/plain; charset="ISO-8859-1"

Needless to say, my mail client doesn't like this and puts everything from "From:" in the body of the email.

Any ideas?

I didn't have the problem in 1.5 RC2, but unfortunately, I was running 1.5 RC2 on a completely different system with an older version of PHP, Apache 2 and a different Linux distribution.

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The following information is required to get an answer:
Get this information from the PHP diagnostic (in the configuration wizard).
Gallery URL (optional but very useful): http://gallery.andycouch.com
Gallery version: 1.5
Apache version: 1.3.26
PHP version (don't just say PHP 4, please): 4.3.11
Graphics Toolkit: NetPBM
Operating system: Debian Woody
Web browser/version (if applicable): N/A