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Oli
Asked: 2013-12-27 04:12:01 +0800 CST

Stop Postfix sending mail from localhost

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When my mailserver sends mail here are the headers:

Received: from example.com (localhost [127.0.0.1])
    by example.com (Postfix) with ESMTP id EB14D48159
    for <[email protected]>; Thu, 26 Dec 2013 11:56:12 +0000 (GMT)

This usually really isn't an issue apart from one customer's Postini filter is being particularly violent and seems to class this as an illegal address. I could fight them but it seems like it would be easier to just send email from the legal IP, right..?

So I've been through practically every Postfix setting. I have already set the following variables to example.com: masquerade_domains, smtp_helo_name, myhostname, myorigin, and I've set smtp_bind_address to our external IP. I don't know what else I can change that might have an effect.

How can I change the address/IP to our external address/IP?

I'm using Ubuntu 12.04, Postfix 2.9.6. I have seen and tried (as noted above) answers like those on How to make Postfix use another IP address? and I don't have any bind addresses in my master.cf file (I think that was the old way of doing things?)

email

2 Answers

  1. Michael Hampton got me wondering if the client had something to do with this. Django by default uses localhost as the email host.

    I added this to my settings.py

    EMAIL_HOST = "example.com"

    And BOOM. Right domain, right IP. Emails aren't blocked.

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  2. sending email with sendmail - django

    Have you considered sending email using sendmail program/ (look alike) provided by postfix?

    StackOverflow question below provides link to django snipet:
    https://stackoverflow.com/questions/10450748/sending-email-with-sendmail-django
    https://djangosnippets.org/snippets/1864/

    It starts one process per one message.

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