Re: Source IP Unknown

  • From: AdamT <adwulf@xxxxxxxxx>
  • To: "[ExchangeList]" <exchangelist@xxxxxxxxxxxxx>
  • Date: Tue, 31 Jan 2006 16:04:10 +0000

On 1/31/06, Mike Dufoe <dufoem@xxxxxxxxxxx> wrote:
> How does someone block their IP within the Headers of an email?
> Example:
> X-SOURCE-IP: [(unknown)]
IIRC, X headers don't necessarily need to be in any email.  You could
telnet on 25 to a SMTP box not configured to create such headers, send
the minimum of commands needed to create an email (HELO, MAIL FROM,
RCPT TO, DATA) and your message wouldn't have headers like X-Mailer.
Some SMTP proxies also strip out X-headers for security reasons.

'Thank-you for not requesting read receipts'

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