Re: [Exim] problem with qualify_domain and host_accept_relay

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Autor: Philip Hazel
Data:  
A: Richard Lithvall
CC: exim-users
Assumpte: Re: [Exim] problem with qualify_domain and host_accept_relay
On Mon, 17 Jun 2002, Richard Lithvall wrote:

> According to the documentation qualify_domain only applies to
> locally-generated messages.


That's because only locally generated messages are permitted to supply
unqualified addresses by default.

If you are qualifying addresses in messages arriving from other hosts,
you must have set {sender,recipient}_unqualified_hosts, in order to
overrule the RFC requirement that all addresses be fully qualified.

What the Exim 4 manual says is:

qualify_domain                   Type: string               Default: see below


    This option specifies the domain name that is added to any sender
    addresses that do not have a domain qualification. It also applies to
    recipient addresses if "qualify_recipient" is not set. Such addresses are
    accepted by default only for locally-generated messages. Messages from
    external sources must always contain fully qualified addresses, unless the
    sending host matches "recipient_unqualified_hosts" or
    "sender_unqualified_hosts" (as appropriate). If "qualify_domain" is not
    set, it defaults to the "primary_hostname" value.


What it fails to say is that if {sender,recipient}_unqualified_hosts IS
set, unqualified addresses from remote hosts are qualified in the same
way as those from local hosts. But it does say it later:

sender_unqualified_hosts       Type: host list*                 Default: unset


    This option lists those hosts from which Exim is prepared to accept
    unqualified sender addresses. The addresses are made fully qualified by
    the addition of "qualify_domain". This option also affects message header
    lines. Exim does not reject unqualified addresses in headers that contain
    sender addresses, but it qualifies them only if the message came from a
    host that matches "sender_unqualified_hosts".





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