[1.0.X] Fixed #8638 -- Added documentation on how to redirect email to a dummy...

[1.0.X] Fixed #8638 -- Added documentation on how to redirect email to a dummy server for testing purposes. Thanks to Rob Hudson and Marc Fargas for their work on the draft for this change.

Merge of r9793 from trunk.


git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.0.X@9798 bcc190cf-cafb-0310-a4f2-bffc1f526a37