When emails are sent via Distribution Services in Strategy 9.x, the "From" field displays the address name in double-quotes as shown below:
From: "Strategy Distribution Services"<DistService@MSTR.com>
To: "User A" <UserA@domain.com">
Date: Friday, March 29, 2013 at 11:59 AM
Subject: Distribution Services Report
In order to send emails without double-quotes around the "From" field, follow the steps outlined below:

This will result in the following:
From: Strategy Distribution Services<DistService@MSTR.com>
To: "User A" <UserA@domain.com">
Date: Friday, March 29, 2013 at 11:59 AM
Subject: Distribution Services Report