On Wed, 2008-11-26 at 11:44 -0700, Duane Hill wrote: > On Wed, 26 Nov 2008, Sturgis, Grant wrote: > > > On Tue, 2008-11-25 at 11:53 -0700, Wietse Venema wrote: > >> Sturgis, Grant: > >>> I'm trying to hide our internal mail servers from the message > >> headers of > >>> outbound email. I've done some reading about this and have found > >> two > >>> solutions: > >> ... > >>> 2. Use header_checks like this > >>> > http://www.nabble.com/Hide-internal-address-(Postfix)-td2300995.html > >> > >> Wietse Venema: > >> This removes ALL Received: headers. That is a bit drastic. You > >> could use a REPLACE action to sanitize IP address and hostname > >> information. > >> > >> See: http://www.google.com/search?q=postfix+replace+received > > > >> > > > > I am having some problems getting this header_checks match. The > header > > I am working with is this: > > > > Received: from blackfoot.internal.com (blackfoot.arraybiopharma.com > > [10.65.35.185]) > > > > So I've added this to my header_checks file for testing: > > > > /^Received: from blackfoot\.internal\.com \(blackfoot > \.arraybiopharma > > \.com \[10\.65\.35\.185\]\) / HOLD > > > > > > Can someone point out what I've done wrong? > > The space between the last ')' and '/' characters. There won't be any > space on the end. Besides, you only have to match up to the ending > parenthesis. > > Thanks, that was it. I've got it matching and so now I've changed it to REPLACE in order to obfuscate our internal mail servers. I've noticed that some of the public mail servers are finding this suspicious and are deferring my mail (yahoo.com in particular).
Is this a bad idea? Are there some "do's" and "don'ts" that I should be aware of when modifying the Received: header? Or should I not even bother? Ignore this: This electronic message transmission is a PRIVATE communication which contains information which may be confidential or privileged. The information is intended to be for the use of the individual or entity named above. If you are not the intended recipient, please be aware that any disclosure, copying, distribution or use of the contents of this information is prohibited. Please notify the sender of the delivery error by replying to this message, or notify us by telephone (877-633-2436, ext. 0), and then delete it from your system.
