Re: How do they blank out IP addresses etc?
From: Bill Unruh (unruh@physics.ubc.ca)Date: 01/30/02
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From: unruh@physics.ubc.ca (Bill Unruh) Date: 30 Jan 2002 17:30:43 GMT
In <bmS58.54$5o.109766@newsr2.u-net.net> "Dave Korn" <no.spam@my.mailbox.invalid> writes:
]"those who know me have no need of my name" <not-a-real-address@usa.net>
]wrote in message news:u5buqvhr7e1a@news.supernews.com...
]> <dnfb5uc38h1k06c6ibermbtnlk9iaghnts@4ax.com> divulged:
]> >those who know me have no need of my name <not-a-real-address@usa.net>
]> >wrote:
]> >><va7b5ukf6pboqkgm91fksd1th4vc04nlqm@4ax.com> divulged:
]>
]> >>it's not that they aren't real, it's that they aren't _complete_. there
]> >>should be at least one received header in every message.
]> >
]> >OK, my wrong choice of words. Those were the complete headers I
]> >received - what the guy has done is munged up the X-Originating-IP so
]> >that no IP address appears. In all three cases, I took the headers from
]> >Outlook Express using Message Properties, Details, Message Source
Anything staring with X is a voluntary header, whose content you should not trust. It is for
information purposes only. Some ISPs insert info about the originating machine there, but
there is not requirement.
Note that may mailers do NOT display full headers. Many have a configuration switch which will
have them do so, but they do not by default. Your machine is seriously deficient if your MTA
does not insert a Received header. Ie, you own machine should insert one. As mentioned the
only way it will not hav eone if the mail came from your own machine and was never handled by
the MTA, but just by the local delivery agent.
]>
]> in that case the message came from your machine, since it contained no
]> received headers showing that it was passed from one mta to another.
]>
]> --
]> okay, have a sig then
] HOTMAIL!!!
] It arrived at his machine by HTTP, which doesn't usually insert received
]headers.
http does not receive mail. Sendmail or its ilk receive mail. Sendmail or its ilk insert
Received From lines everytime they receive mail.
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