Hello 

This seems a absurd problem.

I am using the same gnus(bbdb, feedmail) version 
in both: Xemacs 21.5.33 and in GNU emacs 24 I can read my mail (gmail)
via the corresponding imap setting.

However sending fails.
In both cases I have the following setting 
(setq feedmail-buffer-eating-function 'feedmail-buffer-to-smtpmail
      message-send-mail-function    'feedmail-send-it
      send-mail-function            'feedmail-send-it
      smtpmail-auth-credentials nil
      smtpmail-starttls-credentials nil
      smtpmail-debug-info t
      smtpmail-starttls-credentials '(("smtp.gmail.com" 587 nil nil))
;      smtpmail-auth-credentials '(("smtp.gmail.com" 587 "oub.oub.oub" nil))
      smtpmail-auth-credentials '(("smtp.gmail.com" 587 "oub@ucm.es" nil))
      smtpmail-default-smtp-server "smtp.gmail.com" 
      smtpmail-smtp-server "smtp.gmail.com" ;Version:1.54
      smtpmail-smtp-service 587
	)


While in Xemacs everything works fine, in GNU emacs I obtain the
following error which I don't understand 

,----
| Debugger entered--Lisp error: (error "FQM: Sending...abandoned, no addressees")
|   signal(error ("FQM: Sending...abandoned, no addressees"))
|   error("FQM: Sending...abandoned, no addressees")
|   feedmail-send-it-immediately()
|   feedmail-send-it-immediately-wrapper()
|   feedmail-message-action-send()
|   feedmail-send-it()
|   message-multi-smtp-send-mail()
|   gnus-agent-send-mail()
|   message-send-mail(nil)
|   message-send-via-mail(nil)
|   message-send(nil)
|   message-send-and-exit(nil)
|   call-interactively(message-send-and-exit nil nil)
|   command-execute(message-send-and-exit)
`----
I don't understand why he is complaining about missing addresses. 
I have for example 

,----
| From: Uwe Brauer <oub@mat.ucm.es>
| To: oub@mat.ucm.es
| Subject: my
| X-Draft-From: ("nnimap+UCMgmail:INBOX")
| Gcc: nnml+archive:sent-mail
| Reply-To: Uwe Brauer <oub@mat.ucm.es>
| Date: Thu, 30 Jan 2014 23:50:35 +0100
| Message-ID: <8738k5ozic.fsf@mat.ucm.es>
| User-Agent: Gnus/5.130006 (Ma Gnus v0.6) Emacs/24.3.50 (gnu/linux)
| --text follows this line--
| Hello 
`----
I am completely puzzled and would appreciate any comment.

Uwe Brauer