Ethical Hacking Learn to find vulnerabilities before the bad guys do! Gain real world hands on hacking experience in our state of the art hacking lab. Course designed and taught by expert instructors with years of penetration testing experience. 12 student maximum in every class. Certification attempt included in every package. | Computer Forensics Training at InfoSec Institute Gain the in-demand skills of a certified computer examiner, learn to recover trace data left behind by fraud, theft, and cybercrime perpetrators. Discover the source of computer crime and abuse at your organization so that it never happens again. All of our class sizes are guaranteed to be 12 students or less to facilitate one-on-one interaction with one of our expert instructors. |

| Subject: | Re: Hide internal address (Postfix) |
|---|---|
| Date: | Wed, 11 Jan 2006 22:40:00 -0600 |
Steven Moix - Axianet.ch wrote:
If you do so, aren't your mails rejected by some mail servers because they consider that you have an illegal or incomplete header?
Steven
On Jan 10, 2006, at 3:56 PM, claus westerkamp wrote:
hello chris,
this is how I've done it:
add to main.cf
header_checks = regexp:/etc/postfix/header_checks
in that file you put
"# Header checks file # /^Subject: Internet Sic Codes/ REJECT # /^Subject: ADV / /^received: / IGNORE /^X-Sender: / IGNORE "
that removes the the sender-header before you deliver it to the internet. works great besides eurora clients.
yours claus
kucserak@post.sk schrieb:
Hi everyone!
Iam using Postfix for mail delivery.If somebody inside my network send mail outside the network, the recipient can see in the message header the internal address of the sender host.I would like to hide it, or replace it with the external address of my router.
Any suggestion?
best regards
chris
ps.:i appologize for my poorly grammar
-- Claus Westerkamp Systems Engineering
Raytion GmbH Kaiser-Friedrich-Ring 74 40547 Duesseldorf Fon +49-211-550266-0 Fax +49-211-550266-19 http://www.raytion.com
| <Prev in Thread] | Current Thread | [Next in Thread> |
|---|---|---|
| ||
| Previous by Date: | Re: Sendmail/Blacklists rejecting authenticated users, Robert BARABAS |
|---|---|
| Next by Date: | Re: Sendmail/Blacklists rejecting authenticated users, Scott Gifford |
| Previous by Thread: | Re: Hide internal address (Postfix), Steven Moix - Axianet.ch |
| Next by Thread: | Re(2): Hide internal address (Postfix), SECURITY TimeLord |
| Indexes: | [Date] [Thread] [Top] [All Lists] |