Hi, thanks for Your fast feedback. I have found the same document, but to be honest I didnt found there information what is happening on the server side. Maybe somebody could explain in detail that part ?
thanks in advance Zalezny On Tue, Nov 10, 2015 at 1:36 PM, L.P.H. van Belle <be...@bazuin.nl> wrote: > Read : http://www.sorbs.net/faq/rfc_helo_enforcement.shtml > > I contains also the links to the RFC’s > > > > Greetz, > > > > Louis > > > > > > > ------------------------------ > > *Van:* zalezny.niezale...@gmail.com [mailto: > owner-postfix-us...@postfix.org] *Namens *Zalezny Niezalezny > *Verzonden:* dinsdag 10 november 2015 13:30 > *Aan:* Postfix users > *Onderwerp:* receiving message - checking mx record by postfix > > > > Dear Colleagues, > > > > I would like to understand how Postfix receiving message. I expect that > Postfix has been written base on the RFC rules so maybe somebody will be > able to explain me how its working inside - how this system receiving > message and what is going on in the background. > > > > Our consultant hardly trying to tell us that server during receiving phase > checking MX record of the domain from which coming the E-mail. Does it > really working this way ? I always thought that Postfix checking first DNS > A record (reverse dns), then SPF etc.etc. > > > > I always thought that MX record is provide clear information about the > servers to which client needs to send a message. But right now I`m > completly out of space... > > > > > > Does system check mx record when its receiving message or not ? > > > > > > Do You know where may I find RFC which fully describing this SMTP process ? > > > > > > > > With kind regards > > > > Zalezny > > > > > > >
