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The mail server for something.com has been changed to mail.somethingelse.com

It's working fine for regular mail through a client.

Scripts (Drupal) on something.com when sending email though are failing.

How do I modify main.cf for the postfix install at something.com to
forward all mail generated by the scripts to the real mail server at
mail.somethingelse.com to be sent from there?

Thanks!
Cameron

Hello,

When entering smtp and smtps in transport I am getting an error:
postmap: warning: /etc/postfix/transport.db: duplicate entry: "example.com"

example.com smtp:[10.2.4.7]
example.com smtps:[10.2.4.7]

What is the correct syntax to have both?

Thank you,
Cameron

We have a private network on our lan and a public network on our lan.

We want to put a mail gateway running postfix in the public network and have
it be the point of entry and egress for the other mail servers also running
postfix on both our public and private networks.

I can see here how to configure this:
http://www.postfix.org/STANDARD_CONFIGURATION_README.html#local_network

but I have a few questions.

Are there any pointers or things I should watch out for when setting up this
type of relationship?

Also if mail is for a server on the private network is there any way for
someone conne