Evolution Can't Send Mail

Binary package hint: evolution

Evolution refuses to send mail on my pop/smtp account. I've tried all possible configurations in the settings and none work. No error messages -- it just doesn't send the mail.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: evolution 2.32.2-0ubuntu7
ProcVersionSignature: Ubuntu 2.6.35-25.44-generic 2.6.35.10
Uname: Linux 2.6.35-25-generic i686
NonfreeKernelModules: wl
Architecture: i386
Date: Tue May 31 10:34:37 2011
ExecutablePath: /usr/bin/evolution
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: evolution
UpgradeStatus: Upgraded to natty on 2011-05-08 (23 days ago)
XsessionErrors: (<unknown>:2360): GStreamer-CRITICAL **: gst_debug_add_log_function: assertion `func != NULL' failed