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Subject: Re: Tryign to send mail via a python script by using the local MTA
From: William Ray Wing <wrw@mac.com>
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Date: Sat, 21 Sep 2013 09:29:26 -0400
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On Sep 21, 2013, at 5:21 AM, =CE=9D=CE=AF=CE=BA=CE=BF=CF=82 =
<nikos.gr33k@gmail.com> wrote:

> On 18/9/2013 2:29 =CF=80=CE=BC, Dennis Lee Bieber wrote:
>> On Tue, 17 Sep 2013 18:17:43 +0300, Ferrous Cranus =
<nikos.gr33k@gmail.com>
>> declaimed the following:
>>=20
>>> So cant this be done in python or not?
>>> or is a mtetr of configuring the MTA? conf file?
>>=20
>> 	You can't... Those headers get added by the ISP and any other =
host the
>> mail passes through.
>>=20
>> 	The more you fake the originator IP/user the more the subsequent
>> servers will add flags that they can't confirm who sent the mail... =
And
>> eventually some filter may drop it as spam.
>>=20
> =CE=A5es Denis every foreign MTA adds headers as mail passes over it ( =
as proved to be done at least from the gmail's smtp)
>=20
> But if we set up our local MTA to modify the headers, hostname, ip =
address, user) to our own likign then the local MTA will connect to the =
foreign MTA and passes it out modifed data , not the real one.
>=20
> =CE=99sn't this possible? that is to fake our hostname and ip address?
> --=20
> https://mail.python.org/mailman/listinfo/python-list

=CE=9D=CE=AF=CE=BA=CE=BF=CF=82 ,
  You CLEARLY don't understand.  Please.  There are Mail headers and =
there are IP packet network headers.  They have to agree with each other =
or spam/malware alarms go off.  Even if you fake the mail headers, there =
is no way you can use fake IP packet headers, they are necessary for the =
underlying network hardware to work.

-Bill=