Posta vs. DNS

[Tibor Bartos]

> no, co sa tyka klientov, cize strojov, odkial ta posta prichadza:
> EHLO cuk.atlas.cz
> 450 Client host rejected: cannot find your hostname, [195.119.187.242]

Odmietanie klienta na zaklade kontroly HELO/EHLO porusuje RFC 2821 (co je
aktualna definicia SMTP protokolu):

   An SMTP server MAY verify that the domain name parameter in the EHLO
   command actually corresponds to the IP address of the client.
   However, the server MUST NOT refuse to accept a message for this
   reason if the verification fails: the information about verification
   failure is for logging and tracing only.

Tibor Bartos