Outbox mail stuck with SMTP errors not displayed

Assume I have an email with four recipients, one of them invalid.

Evolution is configured to use SMTP to send email. Authentication is not required (LAN IP is sufficient on the SMTP server).

Now, during the SMTP dialog (as evidenced from Postfix logs), one of the recipients gets rejected with a 550 code, the other 3 get accepted with a 250 code.

BUG: Evolution
- DOES NOT display a pop-up requested displaying the faulty address
- DOES NOT display a hint in the status line displaying the faulty address
- DOES SILENTLY LEAVE the message in the outbox, clogging the entire outbox.

Expected behaviour:
- Evolution should display the server transcript, in particular, the rejected e-mail address, so that the user has a hint as to the problem, and can do something about it.
$ lsb_release -rd
Description: Ubuntu 10.10
Release: 10.10

$ apt-cache policy evolution
evolution:
  Installiert: 2.30.3-1ubuntu7.3
  Kandidat: 2.30.3-1ubuntu7.3
  Versionstabelle:
 *** 2.30.3-1ubuntu7.3 0
        500 http://de.archive.ubuntu.com/ubuntu/ maverick-updates/main i386 Packages
        100 /var/lib/dpkg/status
     2.30.3-1ubuntu6 0
        500 http://de.archive.ubuntu.com/ubuntu/ maverick/main i386 Packages

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: evolution 2.30.3-1ubuntu7.3
ProcVersionSignature: Ubuntu 2.6.35-30.56-generic-pae 2.6.35.13
Uname: Linux 2.6.35-30-generic-pae i686
NonfreeKernelModules: nvidia
Architecture: i386
Date: Tue Aug 9 16:58:51 2011
EcryptfsInUse: Yes
ProcEnviron:
 LANGUAGE=de_DE:de:en_GB:en
 PATH=(custom, no user)
 LANG=de_DE.utf8
 SHELL=/bin/bash
SourcePackage: evolution