OT: mail routing

[Michal Krause]

Dne 18. 6. 1999 stano na trillian.eunet.sk napsal:

> : Podle mne je to nesmysl, ale skutecne se to zrejme v praxi deje.
> 
> Preco nezmysel? - ako default je to celkom rozumne riesenie.
> Tieto veci vznikali v casoch, ked sa internet nehemzil
> vselijakymi firewallmi, jeden clovek nepisal postu z desiatok
> pocitacov a internet provideri nezbierali postu pre
> tisicky pouzivatelov :-) A ked to tak raz je, zmena
> je uz nemozna.

Nevim, za jakych okolnosti vznikalo DNS a jestli MX zaznamy vznikly pozdeji
nez ostatni, ale pripada mi, ze kdyz uz existuje MX, nemelo by se do
dorucovani posty motat nic jineho :(

> : V RFC 974 (MAIL ROUTING AND THE DOMAIN SYSTEM) se mluvi vyhradne o MX 
> : zaznamech.
> 
> Kedze locate povedal, ze toto rfc sa mi na disku
> nahodou vala, pozrel som na to. Treba citat
> pozornejsie: :-)
> 
>    It is possible that the list of MXs in the response to the query will
>    be empty.  This is a special case.  If the list is empty, mailers
>    should treat it as if it contained one RR, an MX RR with a preference
>    value of 0, and a host name of REMOTE.  (I.e., REMOTE is its only
>    MX).  In addition, the mailer should do no further processing on the
>    list, but should attempt to deliver the message to REMOTE.  The idea
>    here is that if a domain fails to advertise any information about a
>    particular name we will give it the benefit of the doubt and attempt
>    delivery.

Sakrys, tak jsem jeste ke vsemu slepej. Ach jo :)

S pozdravem

Michal Krause                                                      /\
ICQ: 7665279            Informace (nejenom) ze sveta Linuxu     /\/  \
email: mike na navrcholu.cz ______ http://www.root.cz/ ______ NAVRCHOLU.cz

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