e in RFC2821: 5. Address Resolution and Mail Handling
Once an SMTP client lexically identifies a domain to which mail will be delivered for processing (as described in sections 3.6 and 3.7), a DNS lookup MUST be performed to resolve the domain name [22]. The names are expected to be fully-qualified domain names (FQDNs): mechanisms for inferring FQDNs from partial names or local aliases are outside of this specification and, due to a history of problems, are generally discouraged. The lookup first attempts to locate an MX record associated with the name. If a CNAME record is found instead, the resulting name is processed as if it were the initial name. * If* * no MX records are found, but an A RR is found, the A RR is treated as* * if it was associated with an implicit MX RR, with a preference of 0*, pointing to that host. If one or more MX RRs are found for a given name, SMTP systems MUST NOT utilize any A RRs associated with that name unless they are located using the MX RRs; the "implicit MX" rule above applies only if there are no MX records present. If MX records are present, but none of them are usable, this situation MUST be reported as an error. nu stii tu rfc-ul. 2015-06-04 14:06 GMT+01:00 Alex 'CAVE' Cernat <[email protected]>: > au facut astia un 'feature' in care daca mx-ul nu exista sa incerce sa > livreze catre adresa ip default ? ca n-am auzit pana acum de asa ceva, > n-ai mx => eroare si multa sanatate > > sau e doar gogu mai cu motz si s-a gandit sa faca un 'feature' pentru > cei care habar nu au ce e aia mx si ca trebuie trecut in dns ? > > Alex > > _______________________________________________ > RLUG mailing list > [email protected] > http://lists.lug.ro/mailman/listinfo/rlug > _______________________________________________ RLUG mailing list [email protected] http://lists.lug.ro/mailman/listinfo/rlug
