And while i'm at it. The recommended approach given in rfc2822 isn't going to guarantee absolutely that the messageid is globally unique anyway.
Sites often have internal hosts using 10.* addresses, which are not guaranteed to be unique internet-wide like normal ip addresses are. These sites often dont use dns fully either, so are likely to need to use a domain literal ip fallback. So it is possible for 'n' messages to be sent at the same time, from the same pid and same sequence number, from more than 1 host. Although not very likely, but then again, neither is it very likely that mail was sent from another 'dirk' machine at exactly the same time/pid/sequence number as this message. On Tue, 2002-06-11 at 12:16, Gerald Oskoboiny wrote: > Hi, > > I have received email with invalid message-id's from a number of > Evolution users recently; sample msgid: > > 1023735423.7339.8.camel@dirk > > I did a bit of googling to see if this has been fixed in the most > recent versions, and can't find any evidence that it has. I found > what seems to be a related thread [1] that referred to bug 1557 [2] > and an expired i-d on guidelines for generating msgids [3] which is > worth reading; also, RFC 2822 says: > > The message identifier (msg-id) itself MUST be a globally unique > identifier for a message. The generator of the message identifier > MUST guarantee that the msg-id is unique. There are several > algorithms that can be used to accomplish this [...] > -- sec 3.6.4, http://www.ietf.org/rfc/rfc2822.txt > > This problem might happen only on systems with misconfigured hostnames > (i.e. systems on which 'hostname --fqdn' returns a simple hostname > instead of fully-qualified domain name?), but I think it would be > good for Evolution to detect and handle this situation to prevent > sending out mail with bogus msgids. > > [1] http://lists.ximian.com/archives/public/evolution/2001-March/006680.html > [2] http://bugzilla.ximian.com/show_bug.cgi?id=1557 > [3] http://www.karlsruhe.org/rfc/draft-ietf-usefor-msg-id-alt-00.txt > > -- > Gerald Oskoboiny <[EMAIL PROTECTED]> > http://impressive.net/people/gerald/ > > _______________________________________________ > evolution maillist - [EMAIL PROTECTED] > http://lists.ximian.com/mailman/listinfo/evolution _______________________________________________ evolution maillist - [EMAIL PROTECTED] http://lists.ximian.com/mailman/listinfo/evolution
