Re: DEAD THREAD (Was: ..::Spoofing Issues::..)

2010-10-07 Thread Noel Butler
On Thu, 2010-10-07 at 20:37 -0400, Wietse Venema wrote: > Noel Butler: > > > if you're in this list for some time, you probably know that spf > > > debates are taboo here. Please accept my apologies for my post (I > > > didn't realise that I was putting my foot in that old hole!). > > > > I doub

Re: DEAD THREAD (Was: ..::Spoofing Issues::..)

2010-10-07 Thread Wietse Venema
Noel Butler: > > if you're in this list for some time, you probably know that spf > > debates are taboo here. Please accept my apologies for my post (I > > didn't realise that I was putting my foot in that old hole!). > > I doubt July this year constitutes a long time , I was temp sub'd a > year

Re: DEAD THREAD (Was: ..::Spoofing Issues::..)

2010-10-07 Thread Noel Butler
On Fri, 2010-10-08 at 00:24 +0200, mouss wrote: > Le 06/10/2010 00:37, Noel Butler a écrit : > > > On Tue, 2010-10-05 at 23:46 +0200, mouss wrote: > > > > > Le 04/10/2010 23:03, Terry Gilsenan a écrit : > > > > > > > Configure postfix to use SPF, and setup an SPF record in DNS for > > > > tha

DEAD THREAD (Was: ..::Spoofing Issues::..)

2010-10-07 Thread mouss
Le 06/10/2010 00:37, Noel Butler a écrit : On Tue, 2010-10-05 at 23:46 +0200, mouss wrote: Le 04/10/2010 23:03, Terry Gilsenan a écrit : Configure postfix to use SPF, and setup an SPF record in DNS for that domain. then what? you reject mail because of spf fail? that would lead to false p

Re: ..::Spoofing Issues::..

2010-10-06 Thread Noel Butler
On Wed, 2010-10-06 at 12:13 +1100, James Gray wrote: > > We've used it for years, had very little complaints, maybe half a > > dozen in all that time. > > SPF is a "must use" IMHO, and by use of "-all" ... providing you > > configure your DNS correctly. > > > > > > ...and then a user puts

RE: ..::Spoofing Issues::..

2010-10-06 Thread Alfonso Alejandro Reyes Jimenez
nombre de James Gray Enviado el: martes, 05 de octubre de 2010 09:34 p.m. Para: postfix-users@postfix.org Asunto: Re: ..::Spoofing Issues::.. On 06/10/2010, at 12:17 PM, John Peach wrote: > On Wed, 6 Oct 2010 12:13:25 +1100 > James Gray wrote: > >> >> On 06/10/2010, at 9:37

Re: ..::Spoofing Issues::..

2010-10-05 Thread James Gray
On 06/10/2010, at 12:17 PM, John Peach wrote: > On Wed, 6 Oct 2010 12:13:25 +1100 > James Gray wrote: > >> >> On 06/10/2010, at 9:37 AM, Noel Butler wrote: >> >>> On Tue, 2010-10-05 at 23:46 +0200, mouss wrote: Le 04/10/2010 23:03, Terry Gilsenan a écrit : > Configure postfix to use

Re: ..::Spoofing Issues::..

2010-10-05 Thread John Peach
On Wed, 6 Oct 2010 12:13:25 +1100 James Gray wrote: > > On 06/10/2010, at 9:37 AM, Noel Butler wrote: > > > On Tue, 2010-10-05 at 23:46 +0200, mouss wrote: > >> Le 04/10/2010 23:03, Terry Gilsenan a écrit : > >>> Configure postfix to use SPF, and setup an SPF record in DNS for that > >>> doma

Re: ..::Spoofing Issues::..

2010-10-05 Thread James Gray
On 06/10/2010, at 9:37 AM, Noel Butler wrote: > On Tue, 2010-10-05 at 23:46 +0200, mouss wrote: >> Le 04/10/2010 23:03, Terry Gilsenan a écrit : >>> Configure postfix to use SPF, and setup an SPF record in DNS for that >>> domain. >>> >> >> then what? you reject mail because of spf fail? that

Re: ..::Spoofing Issues::..

2010-10-05 Thread Noel Butler
On Tue, 2010-10-05 at 23:46 +0200, mouss wrote: > Le 04/10/2010 23:03, Terry Gilsenan a écrit : > > > Configure postfix to use SPF, and setup an SPF record in DNS for > > that domain. > > > > > then what? you reject mail because of spf fail? that would lead to > false positives... > > We'

Re: ..::Spoofing Issues::..

2010-10-05 Thread mouss
Le 04/10/2010 23:03, Terry Gilsenan a écrit : Configure postfix to use SPF, and setup an SPF record in DNS for that domain. then what? you reject mail because of spf fail? that would lead to false positives...

Re: ..::Spoofing Issues::..

2010-10-05 Thread mouss
Le 04/10/2010 23:16, Alfonso Alejandro Reyes Jimenez a écrit : Thanks for your help, right now we use sasl auth and Works very good. If the setup for example a gmail account and the change the gmail address for some user on the postfix domain, postfix delivers that email. I don't want to ac

RE: ..::Spoofing Issues::..

2010-10-04 Thread Alfonso Alejandro Reyes Jimenez
x.org Asunto: Re: ..::Spoofing Issues::.. Le 04/10/2010 21:37, Alfonso Alejandro Reyes Jimenez a écrit : Hi, everyone. I have an issue with some users that are spoofing our mail server, rightnow we can restrict the spoofing on the same server. But if they use another smtp server pretending

RE: ..::Spoofing Issues::..

2010-10-04 Thread Terry Gilsenan
Configure postfix to use SPF, and setup an SPF record in DNS for that domain. sent from my Telstra NEXTG™ handset From: Alfonso Alejandro Reyes Jimenez Sent: Tuesday, 5 October 2010 5:38 AM To: postfix-users@postfix.org Subject: ..::Spoofing Issues::.. Hi

Re: ..::Spoofing Issues::..

2010-10-04 Thread mouss
Le 04/10/2010 21:37, Alfonso Alejandro Reyes Jimenez a écrit : Hi, everyone. I have an issue with some users that are spoofing our mail server, rightnow we can restrict the spoofing on the same server. But if they use another smtp server pretending that they are on our domain the can send

Re: ..::Spoofing Issues::..

2010-10-04 Thread Jeroen Geilman
On 10/04/2010 09:37 PM, Alfonso Alejandro Reyes Jimenez wrote: Hi, everyone. I have an issue with some users that are spoofing our mail server, Spoofing what ? how ? Proper configuration and a submission setup can prevent sender domain spoofing. HELO "spoofing" can be limited or eliminat

..::Spoofing Issues::..

2010-10-04 Thread Alfonso Alejandro Reyes Jimenez
Hi, everyone. I have an issue with some users that are spoofing our mail server, rightnow we can restrict the spoofing on the same server. But if they use another smtp server pretending that they are on our domain the can send those emails. I use to work with websense which can be config