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Newsgroups: mail-lists.delegate-en

[DeleGate-En] Re: delegate smtp error reply - smtp server rewrite
21 Jul 2006 21:41:43 GMT (Yutaka Sato)
The DeleGate Project


In message <_A3405@delegate-en.ML_> on 07/21/06(20:06:23)
you Martin Papadopoulos <> wrote:
 |i have 2 questions regarding delegate as an smtp proxy
 |1. how can i respond with a message to a denied smtp client
 |    e.g. delegate works as smtprelay with a reject list

You can reject SMTP clients based on the IP-address or the hostname of
the client as in other protocols, or based on the E-mail address or other
contents of the message using "SMTPGATE" configuration.

The response for the rejection to the client is just an error code
with a short message in SMTP protocol.  DeleGate does not generate
"error return message" which can be utilized for some attacks.

 |2. is it possible to rewrite the original smtp servername whe delegate
 |acts as smtp proxy ?

Sorry but what does the "original smtp servername" mean?

  9 9   Yutaka Sato <>
 ( ~ )  National Institute of Advanced Industrial Science and Technology
_<   >_ 1-1-4 Umezono, Tsukuba, Ibaraki, 305-8568 Japan
Do the more with the less -- B. Fuller

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