Re: Spam Help Forged headers

Chris Funk a écrit : > > How would I > > < reject_unauth_destination. > > Will the smtpd_*_restrictions work on headers? > no.

Re: Spam Help Forged headers

Chris Funk <[EMAIL PROTECTED]> wrote: > On Thu, Dec 4, 2008 at 11:20 AM, Sahil Tandon <[EMAIL PROTECTED]> wrote: > > > Chris Funk <[EMAIL PROTECTED]> wrote: > > > > <..snip> > > > Obviously not a good thing to do as then no one internally could send > > mail. > > > > > > Is there anything I can d

Re: Spam Help Forged headers

On Thu, Dec 4, 2008 at 11:20 AM, Sahil Tandon <[EMAIL PROTECTED]> wrote: > Chris Funk <[EMAIL PROTECTED]> wrote: > > <..snip> > > Obviously not a good thing to do as then no one internally could send > mail. > > > > Is there anything I can do that would say, If the From: address is *@ > > us-repo

Re: Testing SASL HOWTO using telnet/Postfix/dovecot?

Magnus Bäck wrote: On Wednesday, December 03, 2008 at 23:06 CET, "Roderick A. Anderson" <[EMAIL PROTECTED]> wrote: Magnus Bäck wrote: [...] You can choose any username you like as long as it matches whatever is in your credential database. So far we don't know anything about that. MySQ

Re: Sender = Receiver?

Nice, thank you. That is a nice answer! :) Chris On Thu, Dec 4, 2008 at 3:49 PM, Duane Hill <[EMAIL PROTECTED]> wrote: > On Thu, 4 Dec 2008, Sturgis, Grant wrote: > > On Thu, 2008-12-04 at 12:05 -0700, Christian Desrochers wrote: >> >>> Hi, >>> >>> Thanks for you reply. Where can I read the a

Re: Sender = Receiver?

On Thu, 4 Dec 2008, Sturgis, Grant wrote: On Thu, 2008-12-04 at 12:05 -0700, Christian Desrochers wrote: Hi, Thanks for you reply. Where can I read the archives, please? Christian Have you tried Google? postfix.org is a good place too. You don't even need to search for them. http://www.p

Re: Sender = Receiver?

On Thu, 2008-12-04 at 12:05 -0700, Christian Desrochers wrote: > Hi, > > Thanks for you reply. Where can I read the archives, please? > > Christian Have you tried Google? > > > > On Thu, Dec 4, 2008 at 1:53 PM, Sturgis, Grant > <[EMAIL PROTECTED]> wrote: > > On Thu, 2008-12

Re: Testing SASL HOWTO using telnet/Postfix/dovecot?

On Wednesday, December 03, 2008 at 23:06 CET, "Roderick A. Anderson" <[EMAIL PROTECTED]> wrote: > Magnus Bäck wrote: [...] > > You can choose any username you like as long as it matches whatever > > is in your credential database. So far we don't know anything about > > that. MySQL, sasldb,

Re: Sender = Receiver?

Christian Desrochers wrote: Hi all, We have a spam problem. We get a lot of emails, where the sender (MAIL FROM) address is equal to the receiver (RCPT TO) address. When I look at the "Received:" header field, the IP address of the server it's coming from, is not our mail server. I would like

Re: Sender = Receiver?

On Thu, 2008-12-04 at 11:51 -0700, Christian Desrochers wrote: > Hi all, > > We have a spam problem. We get a lot of emails, where the sender (MAIL > FROM) address is equal to the receiver (RCPT TO) address. When I look > at the "Received:" header field, the IP address of the server it's > coming

Sender = Receiver?

Hi all, We have a spam problem. We get a lot of emails, where the sender (MAIL FROM) address is equal to the receiver (RCPT TO) address. When I look at the "Received:" header field, the IP address of the server it's coming from, is not our mail server. I would like to know if there is a way to b

[no subject]

Hi,I have compiled 2.5.1 and installed postfix on my dev box. Everything is working as expected.Red Hat Enterprise Linux Server release 5.1 (Tikanga)Linux devserver 2.6.18-53.1.14.el5xen #1 SMP Tue Feb 19 07:33:17 EST 2008 x86_64 x86_64 x86_64 GNU/LinuxI installed the same version on a second b

Re: Spam Help Forged headers

Chris Funk <[EMAIL PROTECTED]> wrote: > I am getting a lot of spam with forged addresses in the From: header. They > are forging it with our domain addresses. Here is an example: This has been discussed recently on the list; check the archives for others' opinions and solutions. > Received: fr

Re: Avoiding (trivial) spoofed "mail from"

Roman Medina-Heigl Hernandez a écrit : > mouss escribió: >> Roman Medina-Heigl Hernandez a écrit : Why is the mail not being rejected due to reject_unauthenticated_sender_login_mismatch? I must have a silly bug but I couldn't find it... :-( >>> I got to solve it by: >>> smtpd_sende

Re: Spam Help Forged headers

Chris Funk a écrit : > Hi All, > > I am getting a lot of spam with forged addresses in the From: header. > They are forging it with our domain addresses. Here is an example: > > Received: from localhost (localhost.localdomain [127.0.0.1 > ]) by > mail.us-reports.com

Spam Help Forged headers

Hi All, I am getting a lot of spam with forged addresses in the From: header. They are forging it with our domain addresses. Here is an example: Received: from localhost (localhost.localdomain [127.0.0.1]) by mail.us-reports.com (Postfix) with ESMTP id 391E716C11F for <[EMAIL PROTECTED]>; Thu,

Re: Domain emails from outside

Brian Evans - Postfix List a écrit : > Gabriel Hahmann wrote: >> Hi all, >> >> I'm new to the list and have a problem with my mail system. Recently >> I'm receiving a lot of spam emails coming from the internet but the >> sender is a user from my domain. Then I tried the same thing directly >> from

Re: Domain emails from outside

[EMAIL PROTECTED] a écrit : > > I too am trying to achieve this, here is my blocked_senders map followed by > my postconf -n output: > > Would this achieve the desired results of restricting inbound email with > faked "From" headers? > > Many thanks in advance, > > .vp > > >

Re: Domain emails from outside

LuKreme wrote: > On 4-Dec-2008, at 08:18, Brian Evans - Postfix List wrote: >> Add 'check_sender_access pcre:/path/to/config/restrict_internal_domain' >> to the end of smtpd_sender_restrictions >> >> /path/to/config/restrict_internal_domain: >> /.*\.example.com/REJECT external email with an int

Re: Domain emails from outside

On 4-Dec-2008, at 08:18, Brian Evans - Postfix List wrote: Add 'check_sender_access pcre:/path/to/config/ restrict_internal_domain' to the end of smtpd_sender_restrictions /path/to/config/restrict_internal_domain: /.*\.example.com/REJECT external email with an internal sender address Y

Re: Avoiding (trivial) spoofed "mail from"

On 3-Dec-2008, at 16:53, mouss wrote: DJ Lucas a écrit : LuKreme wrote: On 2-Dec-2008, at 20:21, DJ Lucas wrote: I can find absolutely no reason to inadvertently mislead, or worse, intentionally deceive the recipient by forging the envelope sender's address. In fact, the only reason I can

Re: Avoiding (trivial) spoofed "mail from"

On 3-Dec-2008, at 15:44, DJ Lucas wrote: LuKreme wrote: On 2-Dec-2008, at 20:21, DJ Lucas wrote: I can find absolutely no reason to inadvertently mislead, or worse, intentionally deceive the recipient by forging the envelope sender's address. In fact, the only reason I can see, is to intention

RE: Domain emails from outside

I too am trying to achieve this, here is my blocked_senders map followed by my postconf -n output: Would this achieve the desired results of restricting inbound email with faked "From" headers? Many thanks in advance, .vp ### blocked_senders ### example.com 554

Re: Domain emails from outside

Hello, I initiated a similar thread, few days ago, with interesting responses. Have a look at it: http://archives.neohapsis.com/archives/postfix/2008-12/0010.html Summaryzing, there's a chance of legitimate mail being filtered. See the former thread for examples and a nice discussion :-) PS: And

Re: Domain emails from outside

On Thu, Dec 04, 2008 at 10:15:55AM -0500, Sahil Tandon wrote: > Gabriel Hahmann <[EMAIL PROTECTED]> wrote: > > > I'm new to the list and have a problem with my mail system. Recently I'm > > receiving a lot of spam emails coming from the internet but the sender is a > > user from my domain. Then I

Re: Visibility of Postfix docs,

M. Fioretti a écrit : > [snip] On one hand, I know enough these days to > (almost) never create personally the problem we're talking about. On > the other hand, I am not skilled enough to compile such a list, > certainly not as much as Wietse or others here who probably already > have such a list i

Re: Visibility of Postfix docs,

M. Fioretti wrote: On Thu, Dec 04, 2008 08:42:34 AM -0500, Charles Marcus wrote: On 12/4/2008, M. Fioretti ([EMAIL PROTECTED]) wrote: It would be a very useful service to the community if you or any other of the real gurus could compile a short list, say one or two pages at postfix.org, of whic

Re: Domain emails from outside

Gabriel Hahmann wrote: > Hi all, > > I'm new to the list and have a problem with my mail system. Recently > I'm receiving a lot of spam emails coming from the internet but the > sender is a user from my domain. Then I tried the same thing directly > from other system, as described below: > The ans

Re: Domain emails from outside

Gabriel Hahmann <[EMAIL PROTECTED]> wrote: > I'm new to the list and have a problem with my mail system. Recently I'm > receiving a lot of spam emails coming from the internet but the sender is a > user from my domain. Then I tried the same thing directly from other system, > as described below: >

Re: Domain emails from outside

On 12/4/2008, Gabriel Hahmann ([EMAIL PROTECTED]) wrote: > My configuration is listed below Output of postconf -n is preferred... -- Best regards, Charles

Domain emails from outside

Hi all, I'm new to the list and have a problem with my mail system. Recently I'm receiving a lot of spam emails coming from the internet but the sender is a user from my domain. Then I tried the same thing directly from other system, as described below: telnet mailsystemwithproblem 25 helo testdo

Re: Visibility of Postfix docs,

On Thu, Dec 04, 2008 08:42:34 AM -0500, Charles Marcus wrote: > On 12/4/2008, M. Fioretti ([EMAIL PROTECTED]) wrote: > > It would be a very useful service to the community if you or any other > > of the real gurus could compile a short list, say one or two pages at > > postfix.org, of which howtos

Re: Visibility of Postfix docs,

On 12/4/2008 8:42 AM, Charles Marcus wrote: > That said, I am sure that the website maintainer would be happy to post > such a list if you were to provide it... Actually, that should have read '...would be happy to *consider* posting such a list...' -- Best regards, Charles

Re: Visibility of Postfix docs,

On 12/4/2008, M. Fioretti ([EMAIL PROTECTED]) wrote: > It would be a very useful service to the community if you or any other > of the real gurus could compile a short list, say one or two pages at > postfix.org, of which howtos are wrong, where and above all why. It > may save further question and

Re: Visibility of Postfix docs, (was: Testing SASL HOWTO using telnet/Postfix/dovecot?)

On Thu, Dec 04, 2008 06:38:39 AM -0500, Wietse Venema wrote: > Unfortunately, many non-postfix-site howtos are wrong, with > exceptions such as Koetter et al. OK. > Do not confuse search engine *popularity* with *quality*. I never did. I just gave an explanation of something others observed. I

Re: queue refresh time regarding.

Dear Wietse, Thanks for the inputs. Will adhere to your suggestions. Regards, ANANT. Quoting Wietse Venema <[EMAIL PROTECTED]>: Anant Athavale: Dear List, I have a basic question. Which is parameter I need to use to change in order to change the mailq refresh time. I have the following

Re: Avoiding (trivial) spoofed "mail from"

mouss escribió: > Roman Medina-Heigl Hernandez a écrit : >>> Why is the mail not being rejected due to >>> reject_unauthenticated_sender_login_mismatch? I must have a silly bug but I >>> couldn't find it... :-( >> I got to solve it by: >> smtpd_sender_login_maps = $virtual_mailbox_maps >> > > do

Re: queue refresh time regarding.

Anant Athavale: > Dear List, > > I have a basic question. Which is parameter I need to use to change > in order to change the mailq refresh time. > > I have the following problem. > > Many of my users have their quota filled up and we have set maximum > queue lifetime to default 5d. When p

Re: Visibility of Postfix docs, (was: Testing SASL HOWTO using telnet/Postfix/dovecot?)

M. Fioretti: > above, one quickly learns that searching directly via Google *without* > site restrictions is *better*, as in "more efficient" than the > postfix.org search box. > > Because, very often, it returns at least one or two task-focused > tutorials, pages from http://postfix.state-of-mind

Re: SBC Global

Il giorno mer, 03/12/2008 alle 20.49 -0800, Bill Light ha scritto: > Don't shoot the messenger, but 64.22.79.211 is on 11 different > (fiveten...) blacklists. And, I personally have lots of trouble with > Global Net Access which seems to host more than its share of spam > houses. My local blac

queue refresh time regarding.

Dear List, I have a basic question. Which is parameter I need to use to change in order to change the mailq refresh time. I have the following problem. Many of my users have their quota filled up and we have set maximum queue lifetime to default 5d. When postfix refreshes its mailq (eq