--On 13 February 2012 11:03:20 -0600 Noel Jones <njo...@megan.vbhcs.org> wrote:

I note that gmail appears to insert a Received: line with out
a "from" element, so I can't imagine any penalty will be significant.

I wasn't aware of that.  Maybe I'll examine the RFC more closely and
see if that is specifically allowed.

I'll save you the trouble - it is not allowed.

RFC 2821 p51

Time-stamp-line = "Received:" FWS Stamp <CRLF>

Stamp = From-domain By-domain Opt-info ";"  FWS date-time

From-domain = "FROM" FWS Extended-Domain CFWS


However, every mail that goes via this mailing list has (e.g.)

Received: by english-breakfast.cloud9.net (Postfix, from userid 54)
       id 55AD5C9E23; Wed, 30 Jul 2008 13:26:28 -0400 (EDT)

so, I don't think it is particularly serious :-)

--
Alex Bligh

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