Vista - New Problem - "From" Address format in "Microsoft Communities"

I've tried to use the "Microsoft Communities" support to respond to
newsgroup messages, but it's been complaining about:
---------
Unable to send or receive messages for the Microsoft Communities account.
Windows Live Mail could not post your message.

Subject 'Re: ...'
Server Error: 441
Server Response: 441 (603) Article Rejected -- Missing 'From:' field
Server: 'msnews.microsoft.com'
Windows Live Mail Error ID: 0x800CCCA9
Protocol: NNTP
Port: 119
Secure(SSL): No
--------

It is doing this for two messages I sent a couple of days ago. For new
messages, they go through, but with a from address saying "From:
<john.saunders at trizetto.com>". A message I posted through the "normal"
newsgroup says "From: "John Saunders [MVP]" <john.saunders at
trizetto.com>".

The messages in question are in
microsoft.public.dotnet.framework.aspnet.webservices: Message-ID:
<unnrqQnjIHA.2268@xxxxxx> and Message-ID:
<OZphx1QkIHA.5820@xxxxxx>.
--
--------------------------------------------------------------------------------
John Saunders | MVP - Windows Server System - Connected System Developer

I've no idea, John - but could it be that whatever is in the From field (ie.
the email address field on the General tab of the account properties) has to
be properly formed? Ie. something like at least <string@xxxxxx>, with
no spaces. The Communities server, which acts as a proxy, may not be as
forgiving as the NNTP server.
A quick RFC check gave:
RFC850
2.1.3 From
The From line contains the electronic mailing address of the person who
sent the message, in the ARPA internet syntax. It may optionally also
contain the full name of the person, in parentheses, after the electronic
address...
RFC2822
3.4.1. Addr-spec specification
An addr-spec is a specific Internet identifier that contains a locally
interpreted string followed by the at-sign character ("@", ASCII value 64)
followed by an Internet domain...
--
Noel

"John Saunders [MVP]" <john.saunders at trizetto.com> wrote in message
news:#R1HHLRkIHA.1280@xxxxxx

I have been posting to Microsoft Communities aka msnews.microsoft.com using
"0123456@xxxxxx", as you can see. Under Windows Live Mail, this goes in
Tools, Accounts, Properties, E-mail address. Although this is not a valid
address, apparently it uses a valid address format.

Cheers,

Earle

"Ildhund" <jnllb@xxxxxx> wrote in message
news:eO1veBSkIHA.5280@xxxxxx

Hi, John.

Does your address really say " at "? Instead of "@"?

I notice that your post shows that form of address (see Snip attached).
Your post yesterday (3/27/08) also shows that same " at " format. These two
posts are the only ones that I can recall that did NOT include "@" in the
address.

RC
--
R. C. White, CPA
San Marcos, TX
rc@xxxxxx
Microsoft Windows MVP
(Running Windows Live Mail 2008 in Vista Ultimate x64 SP1)

"John Saunders [MVP]" <john.saunders at trizetto.com> wrote in message
news:#R1HHLRkIHA.1280@xxxxxx

As long as the address format is proper, it doesn't matter if the
address doesn't exist. I use gary@xxxxxxlid. The .invalid TLD is
RFC-recommended for a non-existent address.

--
Gary VanderMolen, MS-MVP (WLMail)


"Earle Horton" <0123456@xxxxxx> wrote in message news:9E0316AA-F8F6-4875-86BC-CA38BF6202BB@xxxxxx

"Gary VanderMolen" <gary@xxxxxx> wrote in message
news:#G$pvIWkIHA.5540@xxxxxxOk, let's try this one. I've added this newsgroup under Microsoft
Communities. Indeed, I can't send it (one or more recipients do not have an
email address).

Now, trying again, I've added X0@xxxxxx as an address. Let's see if
this works.

--
--------------------------------------------------------------------------------
John Saunders | MVP - Windows Server System - Connected System Developer