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
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
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
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
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
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
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...
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'
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
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
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
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
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
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
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
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
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
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