Debian Developers - Restrictive SMTP server

Author

Restrictive SMTP server

Daniel Ruoso

2005-03-12, 5:51 pm

Hi,

I'm with a problem about sending emails @debian.org. My ESP (email
service provider) has a restrictive rule about sending emails with a
>From header different of the account you actually have.

This wouldn't be a problem, as I could set up a mail server in my
machine, but I am in a DSL network which is completely blacklisted due
to spammers.

The fact is that I am unable to send emails with my debian.org address.
Does someone has some idea of how can I fix that?

daniel

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Blars Blarson

2005-03-12, 5:51 pm

In article <1110655086.1594.10.camel@cedro> you write:
>The fact is that I am unable to send emails with my debian.org address.
>Does someone has some idea of how can I fix that?

ssh to people.debian.org and send the mail from there. (use mutt,
mailx, etc.)

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John Hasler

2005-03-12, 5:51 pm

daniel writes:
> I'm with a problem about sending emails @debian.org. My ESP (email
> service provider) has a restrictive rule about sending emails with a From
> header different of the account you actually have.

Is it the "From:" header they object to, or the SMTP HELO? I fix up the
latter in Exim.
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Bartosz Fenski aka fEnIo

2005-03-13, 7:47 am

On Sat, Mar 12, 2005 at 04:18:06PM -0300, Daniel Ruoso wrote:
> I'm with a problem about sending emails @debian.org. My ESP (email
> service provider) has a restrictive rule about sending emails with a
>
> This wouldn't be a problem, as I could set up a mail server in my
> machine, but I am in a DSL network which is completely blacklisted due
> to spammers.
>
> The fact is that I am unable to send emails with my debian.org address.
> Does someone has some idea of how can I fix that?

`apt-get install msmtp` and use some other account where such problem
doesn't exist.

That's what I'm using ;)

regards
fEnIo

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Matthew Palmer

2005-03-13, 7:47 am

On Sun, Mar 13, 2005 at 09:58:49AM +0100, Bartosz Fenski aka fEnIo wrote:
> On Sat, Mar 12, 2005 at 04:18:06PM -0300, Daniel Ruoso wrote:
>
> `apt-get install msmtp` and use some other account where such problem
> doesn't exist.
>
> That's what I'm using ;)

I'm willing to provide an OpenVPN tunnel to an SMTP server for any DD who is
unable to find alternate lodgings, and I'm pretty sure I'm not the only one.

- Matt

Stephen Gran

2005-03-13, 5:51 pm

This one time, at band camp, Matthew Palmer said:
> On Sun, Mar 13, 2005 at 09:58:49AM +0100, Bartosz Fenski aka fEnIo wrote:
>
> I'm willing to provide an OpenVPN tunnel to an SMTP server for any DD whois
> unable to find alternate lodgings, and I'm pretty sure I'm not the only one.

I can offer something as well - I would probably lean towards just
auth+ssl instead of over VPN, but it's up to you. I just don't happen
to have a VPN set up yet, so it's less ovrhead for me

Kurt B. Kaiser

2005-03-14, 2:48 am

Daniel Ruoso <daniel@ruoso.com> writes:

> The fact is that I am unable to send emails with my debian.org address.
> Does someone has some idea of how can I fix that?

fastmail.fm has 'personalities', 'aliases', and smtp access.

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Tollef Fog Heen

2005-03-14, 2:48 am

* Matthew Palmer

| I'm willing to provide an OpenVPN tunnel to an SMTP server for any
| DD who is unable to find alternate lodgings, and I'm pretty sure I'm
| not the only one.

http://freerelay.err.no/

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Daniel Ruoso

2005-03-14, 5:58 pm

Em Dom, 2005-03-13 às 14:39, Stephen Gran escreveu:
> I can offer something as well - I would probably lean towards just
> auth+ssl instead of over VPN, but it's up to you. I just don't happen
> to have a VPN set up yet, so it's less ovrhead for me

That would be nice, auth+ssl sounds simpler to me. I would be very very
happy if it can be done. I am waiting your command...

daniel

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Gunnar Wolf

2005-03-15, 6:00 pm

Daniel Ruoso dijo [Sat, Mar 12, 2005 at 04:18:06PM -0300]:
> I'm with a problem about sending emails @debian.org. My ESP (email
> service provider) has a restrictive rule about sending emails with a
>
> This wouldn't be a problem, as I could set up a mail server in my
> machine, but I am in a DSL network which is completely blacklisted due
> to spammers.
>
> The fact is that I am unable to send emails with my debian.org address.
> Does someone has some idea of how can I fix that?

Hi,

Many suggestions have already been posted - I have your same
situation, but have been working correctly with it for over one
year. What I do is:

- I deliver SMTP to the smarthost 127.0.0.1:10025
- At 127.0.0.1:10025, I have a ProtoWrap agent invoked with the script
shown below
- ProtoWrap changes the envelope and hands it over to my ISP's MTA

What is ProtoWrap [1]? A simple daemon I wrote a long time ago made to be
a generic proxy for line-oriented protocols. It works fine, but I
don't know if it is usable/useful enough for packaging it.

Ok, and here is the invoking script:

-----
#!/usr/bin/perl -w
use strict;
use ProtoWrap;

my $wrap;
$wrap = ProtoWrap->new(standalone => 0,
destAddr => 'smtp.prodigy.net.mx',
destPort => 25,
destType => 'ip',
logLevel => 2,
testLine => \&rewriteEnvelope);
$wrap->startServer or warn "Can't start server: ",$_->getProp;

sub rewriteEnvelope {
my ($self,$line,$socket,$who);
$self = shift;
$line = shift;
$socket = shift;
$who = shift;

unless (ref $line) {
warn "No es una referencia: $line";
return 1;
}

if ($$line =~ /^mail from:/i) {
$$line = 'MAIL FROM: gwolf@prodigy.net.mx';
}
return 1;
}
-----

You will find that it might be too simplistic. In fact, it can
(seldom) lead to errors - Lets say I want to say I got a mail from
your address... You will get it differently:

MAIL FROM: gwolf@prodigy.net.mx

....But anyway, it works quite nicely.

Greetings,

[1] http://www.gwolf.org/seguridad/wrap/

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John Hasler

2005-03-15, 6:00 pm

Gunnar Wolf writes:
> I deliver SMTP to the smarthost 127.0.0.1:10025
> At 127.0.0.1:10025, I have a ProtoWrap agent invoked with the script
> shown below
> ProtoWrap changes the envelope and hands it over to my ISP's MTA

I find it much simpler to just configure my local MTA to make the necessary
adjustments before delivering the mail to my ISP's smarthost. The only
change I've ever found necessary, though, is to forge the HELO command used
by my MTA when talking to the smarthost.
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