Thanks to you both. Adding To and From headers solves the issue, and the mail 
is accepted.

Regards,
--
Ian Gibbs
[email protected]
Mon - Wed: +31 (0) 629  202752
Thu - Sun: +44 (0) 7815 142001

On 11/03/11 18:26, Larry Stone wrote:
On Fri, 11 Mar 2011, Mark Sapiro wrote:

Larry's response is correct except for this one detail. Actually, this
message has a Subject: header and a non-conformant "This" header and
no body. The body must be separated from the headers by an empty line.

Oops. I looked at the original way too quickly. Thanks, Mark, for correcting my 
post. The lesson in
this is that SMTP, like almost all computer command sets, is very intolerant of 
even the slightest
mistake. It does exactly what you tell it to do and has no idea what you meant 
when you get it
wrong. Using Telnet to test SMTP has its uses (I do it to make sure the 
anti-spam controls on the
commands works since that's hard to do by other means) but unless you are 
prepared to type
everything in painful detail, expect weird results. Mailman is best tested with 
real messages sent
by a proper MUA.

-- Larry Stone
[email protected]
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