Mailinglist Archive: opensuse (3666 mails)

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Re: [SLE] Postfix setting
  • From: "Carlos E. R." <robin1.listas@xxxxxxxxxx>
  • Date: Sun, 27 Mar 2005 04:31:39 +0200 (CEST)
  • Message-id: <Pine.LNX.4.58.0503270342470.7527@xxxxxxxxxxxxxxxx>

The Saturday 2005-03-26 at 13:37 -0900, John Andersen wrote:

> The problem is that mynetworks does not appear in /etc/sysconfig/postfix
> so they have no way to set this via yast. You have to know this
> in advance. Perhaps it will be fixed in 9.2 or 9.3.
> Without the ability to set mynetworks via yast, postfix defaults mynetworks to
> use mynetworks-style, and THAT in turn defaults to mynetworks_style = subnet
> which means anyone with the same subnet can relay thru your box. In my case
> someone appearing to be (in reality, probably forged IP) on the same ISP was
> able to connect and relay.
> So the upshot is, that unless you know to check the, postfix
> will install insecurely if you accept smtp connections from
> remote and you configure it with Yast2.

This was reported time ago in this list:

|Date: 05 Sep 2003 08:58:54 -0500
|From: David Krider <david@
|To: suse-linux-e@
|Subject: [SLE] SuSE's default postfix config is an open relay?
|X-Message-Number-for-archive: 158428

The recommendation at the time was to report the issue on the
suse-security list. I don't know if it was, and what was the answer, if

Carlos Robinson

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