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How to make Postfix relay mail to the servers specified as MX, not to itself

Hi,

I have a machine with Postfix that I want to use for one of my scripts to send mail, to the same domain. It's kind of confusing for me, but here it is:

Let's say the machine name is mydomain.com.mx, and the MX entries of the domain are setup for Google Apps (so Google handles all my mail).

So, currently if I try to send mail from inside the machine, I get a 'user not found' error from postfix, since it tries to deliver mail locally, instead of using the servers specified in the DNS.

Is there an easy way to fix this?

Thanks!

ASKER CERTIFIED SOLUTION

Kerem ERSOY

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ivanvega

ASKER

Hi,

I tried your first suggestion and it still doesn't work:

"Recipient address rejected: User unknown in local recipient table"

And my system doesn't have a /etc/postfix/virtual file.

Thanks.

ivanvega

ASKER

It seems if I change myhostname and mydomain too (nullclient.mydomain.com.mx, mydomain.com.mx), it now works.

relayhost also accepts the actual domain, instead of a given MX host, and then it will select the right MX entry. Nice.

Thanks!

Kerem ERSOY

ok. Don't forget to modify your /etc/hosts too. Remove your hostname as an alias to localhost add its own address such as:

127.0.0.1 localhost.localdomain localhost
<ip_of_your_ethernet> nullhost.mydomain.mx nullhost

save & exit.

You can just create /etc/postfix/virtual if it does not exist. But in the default configuration there exists a virtual file with lots of commensts. It is possible that your default config is not in /etc/postfix. if it is just create yourself. it is a text file afterall..