Re: (off-topic) Outlook 2003 msgids causing odd email problems

2007-09-11 Thread Jonathan McKeown
Replying to myself,

On Tuesday 11 September 2007 12:20, Jonathan McKeown wrote:

 After much scratching of head and tearing of hair, I have finally found two
 provable instances - one in Cyrus and one in Mailman - of replies to
 messages being sent using Microsoft Outlook Service Pack 2, where Outlook
 has given the reply the same message-id as the message it is replying to -
 in flat violation of RFC{2}822. (In one case the original message, the
 read-receipt automatically generated by Outlook, the reply, and the forward
 of the reply sent when the reply didn't arrive, all had the same msg-id).

After further investigation, it appears that the message-id generated by 
Outlook 2003 has the originating host name on the RHS (after the @), unless 
the sending machine is a member of a Server 2003 AD domain in which case the 
domain name is used which increases the risk of a collision (especially if 
the LHS is copied!).

Jonathan
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RE: (off-topic) Outlook 2003 msgids causing odd email problems

2007-09-11 Thread Ted Mittelstaedt

Yeah Outlook Express did that when it forwarded messages I forgot
the version - it screwed up spamassassin, I filed a bug, bug finally
got a workaround added.

File a bug with mailman and cyrus dev. teams, maybe they can
work around it.  At least get it documented.  And call Microsoft
tech support and complain.  Microsoft does not charge for tech
support incidents where a bug is reported.

Ted

 -Original Message-
 From: [EMAIL PROTECTED]
 [mailto:[EMAIL PROTECTED] Behalf Of Jonathan
 McKeown
 Sent: Tuesday, September 11, 2007 3:20 AM
 To: freebsd-questions@freebsd.org
 Subject: (off-topic) Outlook 2003 msgids causing odd email problems


 I'm raising this here in case anyone else has either seen this
 problem and has
 any thoughts, or alternatively has experienced the fallout and is
 wondering
 why.

 Over the last few weeks I've had complaints that email messages are going
 astray. This has happened in Cyrus imapd on delivery, and in
 Mailman, where
 archiving of posts is sometimes broken.

 After much scratching of head and tearing of hair, I have finally
 found two
 provable instances - one in Cyrus and one in Mailman - of replies
 to messages
 being sent using Microsoft Outlook Service Pack 2, where Outlook
 has given
 the reply the same message-id as the message it is replying to - in flat
 violation of RFC{2}822. (In one case the original message, the
 read-receipt
 automatically generated by Outlook, the reply, and the forward of
 the reply
 sent when the reply didn't arrive, all had the same msg-id).

 As far as I can tell this behaviour was introduced by SP2; the Web says
 Outlook 2003 before that didn't add message-ids at all.

 I've now set

 duplicatesuppression no

 in imapd.conf which seems to be addressing the problem of lmtpd
 discarding the
 ``duplicate'' messages. Mailman is another issue.

 I haven't seen any discussion of this problem on the Web: has anyone else
 encountered it? Better yet, does anyone have a fix (on the
 Microsoft side)?

 Jonathan
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