Aggelos:
> I have the following question concerning setup for multiple domains on
> the same host machine:
>
> Let us say that in /etc/postfix/main.cf we have the following:
> mydestination = a.domain.com, b.domain.com, c.domain.com
>
> We have setup DNS so that all mx records for the above domains resolve
> to our host's ip address.
>
> We would like postfix, when contacted as one of the above domains, to
> reply to the helo smtp directive, with its respective x.domain.com name.
>
> ...e.g. like this:
>
> $ telnet a.domain.com 25
> Trying xx.xx.xx.xxx...
> Connected to a.domain.com.
> Escape character is '^]'.
> 220 a.domain.com ESMTP
> helo from me
> 250 a.domain.com
>
> ...but if contacted as b.domain.com:
>
> $ telnet b.domain.com 25
> Trying xx.xx.xx.xxx...
> Connected to b.domain.com.
> Escape character is '^]'.
> 220 b.domain.com ESMTP
> helo from me
> 250 b.domain.com
>
> Is this possible to setup, with one host ip address?
Which Internet protocol layer is responsible for sending the server's
hostname from the SMTP client host to the SMTP server host, and
how would the SMTP server process retrieve this information?
Wietse
