On Oct 6, 5:23pm, George Roberts wrote: } } If one looks carefully, RFC 5321 3.7.2 states: } } "As another consequence of trace header fields arising in non-SMTP } environments, receiving systems MUST NOT reject mail based on the } format of a trace header field and SHOULD be extremely robust in the } light of unexpected information or formats in those header fields." } } I'm not going to quote the whole RFC to you, but from what I've read } it's pretty clear that the Received: line is for debugging purposes } ("... the most important use of Received: lines is for debugging } mail faults ...", Section 3.7.2). I'm hard-pressed to find any } justification for blocking of mail generated or handled by Exchange. } In fact, I think it's pretty clear the RFC states you MUST NOT block } them.
No RFC can tell you what you MUST or MUST NOT block. That is a local policy issue under the control of whatever authority is responsible for a site. Do I think this is a silly policy that is likely to cause major problems? Given the amount of mail that passes through exchange servers, of course I do. But, it is his policy to make and his right to do so. } -----Original Message----- } From: mimedefang-boun...@lists.roaringpenguin.com [mailto:mimedefang-bounce= } s...@lists.roaringpenguin.com] On Behalf Of kd6...@yahoo.com } Sent: Wednesday, May 16, 2012 5:23 PM } To: mimedefang@lists.roaringpenguin.com } } --- On Wed, 5/16/12, David F. Skoll <d...@roaringpenguin.com> wrote: } > After gnashing my teeth at Microsoft because its dumb software ignores } > Precedence: and List-*: headers and cheerfully sends out-of-office } > replies to list owners, I discovered this: } > } > http://msdn.microsoft.com/en-us/library/ee219609%28v=3Dexchg.80%29.aspx } > } > I've set up a MIMEDefang filter to add X-Auto-Response-Suppress: OOF } > to all list traffic.=A0 Just passing it along as a tip to other list } > owners. } } I take a stronger approach: Since M$ Exchange is incapable of generating p= } roper "Received:" headers, I reject all mail which has transited such a sys= } tem using that software. } } If one looks carefully, their chosen syntax violates even the old RFC 821/8= } 22 standards (STD 10), let alone the 5321/5322 modern versions. } }-- End of excerpt from George Roberts _______________________________________________ NOTE: If there is a disclaimer or other legal boilerplate in the above message, it is NULL AND VOID. You may ignore it. Visit http://www.mimedefang.org and http://www.roaringpenguin.com MIMEDefang mailing list MIMEDefang@lists.roaringpenguin.com http://lists.roaringpenguin.com/mailman/listinfo/mimedefang