Re: [Exim] Trubles with forwarding to non-existant adresses:…

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Autor: Philip Hazel
Data:  
Para: Daniel W. Samsyguin
CC: exim-users
Assunto: Re: [Exim] Trubles with forwarding to non-existant adresses: hard loopback.
On Fri, 1 Dec 2000, Daniel W. Samsyguin wrote:

> Is ther any way to block looping messages?


There is no way to block a loop of the form

  . User A sends a message to user B, with sender address = A;
  . This causes user B to send a different message to user A, with 
    sender address = B; 
  . This causes user A to send a different message to user B ...


On the other hand, if traditional forwarding is used just to redirect
a message between two hosts (without changing the sender address),
eventually the message builds up sufficient Received: headers for it to
be blocked by Exim's check on the number of Received: headers.


-- 
Philip Hazel            University of Cambridge Computing Service,
ph10@???      Cambridge, England. Phone: +44 1223 334714.