Re: [Exim] Domain literals: weighing up the arguments

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Autor: Russell King
Fecha:  
A: David Woodhouse
Cc: Tim Jackson, exim-users
Asunto: Re: [Exim] Domain literals: weighing up the arguments
On Tue, Dec 09, 2003 at 09:09:09AM +0000, David Woodhouse wrote:
> You missed a bit:
>
>    SMTP systems are expected to make every reasonable effort to accept
>    mail directed to Postmaster from any other system on the Internet.
>    In extreme cases --such as to contain a denial of service attack or
>    other breach of security-- an SMTP server may block mail directed to
>    Postmaster.  However, such arrangements SHOULD be narrowly tailored
>    so as to avoid blocking messages which are not part of such attacks.


However, the above quoted paragraph does not say "you must accept
postmaster@[ipliteral]"; it merely implies that you accept postmaster
at all mail domains that you provide service for, and, in connection
with its preceding paragraph, also accept the unqualified postmaster.

--
Russell King
 Linux kernel    2.6 ARM Linux   - http://www.arm.linux.org.uk/
 maintainer of:  2.6 PCMCIA      - http://pcmcia.arm.linux.org.uk/
                 2.6 Serial core