Can't send mail with Emacs, can with XEmacs

[Glyn Millington]

A happy new year to you all!


Recently I've been trying to use Emacs (21 and 22) but cannot persuade
Gnus to send mail ....

Postfix coughs up this error message

,----
| Jan 2 13:46:20 beardedwonder postfix/smtp[6316]: 53C86156ED:
| to=<wistanswick@linuxmail.org>, relay=smtp.eclipse.co.uk[82.153.251
| .1]:25, delay=0.38, delays=0.07/0.09/0.06/0.15, dsn=4.0.0,
| status=deferred (host smtp.eclipse.co.uk[82.153.251.1] said: 450
| <glyn@beardedwonder.millingtons.org>: Sender address rejected: Domain
| not found (in reply to RCPT TO command))
`----

Now I understand the message about the domain not being found; what I
don't understand is why the self-same .gnus file allows me to send mail
with XEmacs.  Can't see anything in my init.el that would affect this.

A successful mailing with XEmacs/Gnus looks like this in the logs

,----
| Jan 2 16:59:31 beardedwonder postfix/smtp[4942]: 452A51C7D9:
| to=<wistanswick@linuxmail.org>, relay=smtp.eclipse.co.uk[82.153.251
| .1]:25, delay=0.41, delays=0.17/0.03/0.07/0.14, dsn=2.0.0, status=sent
| (250 Ok: queued as BE492C0748)
`----

This was Oort Gnus.

Can anyone suggest where I might begin on this? Do Emacs and XEmacs have
different defaults for certain variables?

thanks for any light you can bring!

atb





Glyn