On 10/30/07, Jim Stitzel <stitzelj at gmail.com> wrote: > Has anyone had a chance to look into this? http://trac.wordpress.org/changeset?old_path=tags%2F2.3&old=6293&new_path=tags%2F2.3.1&new=6293#file18 That first change to pluggable.php is the only change affecting mail. You can try deleting the Sender line that was added.