[Debian]: Re: Smail
Sascha Berkenkamp wrote:
> Hallo,
>
> ich habe da mal eine Frage, ist es eigentlich egal, von wem die Message
> ID einer eMail stammt? Ich habe naemlich SMAIL so installiert, dass er
> die Message ID am Ende mit 'uumail.de.uu.net' schreibt, und dann die
> Mails direkt verschickt. Frage: ist dies zulaessig, oder muss die
> Message ID als Endung 'mein_rechner' tragen, obwohl 'mein_rechner' nicht
> 24h std. im NEtz ist?
Ich zitiere mal ein wenig aus RFC 822:
/ "Message-ID" ":" msg-id
msg-id = "<" addr-spec ">" ; Unique message id
addr-spec = local-part "@" domain ; global address
local-part = word *("." word) ; uninterpreted
; case-preserved
domain = sub-domain *("." sub-domain)
sub-domain = domain-ref / domain-literal
domain-ref = atom ; symbolic reference
6.2.1. DOMAINS
A name-domain is a set of registered (mail) names. A name-
domain specification resolves to a subordinate name-domain
specification or to a terminal domain-dependent string.
Hence, domain specification is extensible, permitting any
number of registration levels.
Name-domains model a global, logical, hierarchical addressing
scheme. The model is logical, in that an address specifica-
tion is related to name registration and is not necessarily
tied to transmission path. The model's hierarchy is a
directed graph, called an in-tree, such that there is a single
path from the root of the tree to any node in the hierarchy.
If more than one path actually exists, they are considered to
be different addresses.
The root node is common to all addresses; consequently, it is
not referenced. Its children constitute "top-level" name-
domains. Usually, a service has access to its own full domain
specification and to the names of all top-level name-domains.
The "top" of the domain addressing hierarchy -- a child of the
root -- is indicated by the right-most field, in a domain
specification. Its child is specified to the left, its child
to the left, and so on.
Some groups provide formal registration services; these con-
stitute name-domains that are independent logically of
specific machines. In addition, networks and machines impli-
citly compose name-domains, since their membership usually is
registered in name tables.
In the case of formal registration, an organization implements
a (distributed) data base which provides an address-to-route
mapping service for addresses of the form:
person@registry.organization
Note that "organization" is a logical entity, separate from
any particular communication network.
A mechanism for accessing "organization" is universally avail-
able. That mechanism, in turn, seeks an instantiation of the
registry; its location is not indicated in the address specif-
ication. It is assumed that the system which operates under
the name "organization" knows how to find a subordinate regis-
try. The registry will then use the "person" string to deter-
mine where to send the mail specification.
The latter, network-oriented case permits simple, direct,
attachment-related address specification, such as:
user@host.network
Once the network is accessed, it is expected that a message
will go directly to the host and that the host will resolve
the user name, placing the message in the user's mailbox.
Wichtig ist, dass die Message-ID eindeutig ist. Der "domain"-Part
sollte schon die reelle Domain (z.B. hier finlandia.infodrom.north.de)
beinhalten. Haette ich keine offizielle Adresse, koennte ich z.B.
finlandia.infodrom.home nehmen. Imho ist das zulaessig.
> BTW: kann ich Smail so installieren, dass es die Mails von einem anderen
> Rechner (Debian 1.3 mit Smail) annimmt und auch versendet?
Macht er das etwa per Voreinstellung nicht? Was meinst Du, wie
Mailserver im Inter- oder Intranet funktionieren?
Gruesse,
Joey
--
Experience is something you don't get until just after you need it.
Please always Cc to me when replying to me on the lists.
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