Smtp error messages - what does this one mean

  • From: "simon whale" <simon@xxxxxxxxxxxxxx>
  • To: "[ExchangeList]" <exchangelist@xxxxxxxxxxxxx>
  • Date: Thu, 19 Sep 2002 14:06:23 +0100

Hi,

Does anybody know what the following smtp error message means and how do
I fix it.

#5.5.0 smtp;553 sorry, envelope sender must have a valid 
domain name (#5.7.1)


Many thanks
Simon Whale
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