?????? ?????:
> Thanks for the answers.
>
> About domain name - the thing is that right now i see exactly the next
> message (except ip address) "Received: from mail.localdomain
> ([ip.add.re.ss]) by mx.google.com..". And "mail.localdomain" is a
Most SMTP servers including Postfix will log TWO NAMES:
Received: from mail.localdomain (reverse-name [ip.add.re.ss]) ...
where reverse-name is taken from the DNS PTR record for the SMTP
client IP address. If the TWO NAMES differ then some receivers
consider that a sign of spamminess. To fix that each domain would
need its own IP address.
> local alias. So, it cant be resolved from external network. So, it
> cant depend from real ip address. So, only postfix can say to
> mx.google.com that postfixbox is "mail.localdomain".
As Noel suggested, you can use sender_dependent_default_transport_maps,
but most people think it is not worth the trouble.
UNTESTED example:
/etc/postfix/main.cf:
sender_dependent_default_transport_maps = hash:/etc/postfix/def_transport
/etc/postfix/def_transport:
@example.com smtp-example-com
@example.net smtp-example-net
/etc/postfix/master.cf:
smtp-example-com unix - - - - - smtp
-o myhostname=mail.example.com
-o smtp_header_checks=pcre:/etc/postfix/example-com.pcre
#-o smtp_bind_address=ip.addr.for.example-com
smtp-example-net unix - - - - - smtp
-o myhostname=mail.example.net
-o smtp_header_checks=pcre:/etc/postfix/example-net.pcre
#-o smtp_bind_address=ip.addr.for.example-net
/etc/postfix/example-com.pcre:
/^(.*)\bmail\.local\.domain\b(.*)$/ ${1}mail.example.com${2}
/etc/postfix/example-net.pcre:
/^(Message-ID:.*)\bmail\.local\.domain\b(.*)$/ ${1}mail.example.net${2}
Clearly, most of this can be generated mechanically.
References:
http://www.postfix.org/postconf.5.html#sender_dependent_default_transport_maps
http://www.postfix.org/master.5.html
http://www.postfix.org/header_checks.5.html
http://www.postfix.org/pcre_table.5.html
http://www.postfix.org/postconf.5.html#smtp_bind_address
Wietse
