On 11/30/2012 01:28 AM, Wietse Venema wrote:
WebprodsPT:
Hello,
I am the administrator of a Postfix setup with multiple domains,
multiple IP addresses and SSL configured and up and running. Everything
was configured by myself and I have no restrictions on the mail server
machine so basically I can do whatever you suggest.
Today I received a new requirement and I'm not being able to configure
it, even after reading lots of resources around the web. Email messages
for each separate domain must be sent FROM their respective IP address.
As documented, using "-o smtp_bind_address" with smtpd(8), the mail
receiving program, has no effect whatsoever. This feature has effect
only on smtp(8), the mail sending program.
You may kludge something with sender_dependent_default_transport_maps,
choosing an appropriate SMTP client depending on the sender address,
each SMTP client having its own "-o smtp_bind_address" setting.
That obviously does not work for delivery status notifications
which, as required by RFC, have the null sender address.
The proper solution is to use one POSTFIX INSTANCE per domain/IP
address. See http://www.postfix.org/MULTI_INSTANCE_README.html
Wietse
Thank you. This information was very useful.
Now I understand the differences between smtp and smtpd processes and
why some of the -o parameters where not being used in some circumstances
(like -o myhostname that is used in smtp aka sending process and must be
set in each main.conf instance obviously).
I'm having trouble now with dovecot in multiple instances but I will
create other thread for hat.
Thank you
