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The Tuesday 2007-04-17 at 22:24 +0200, Sandy Drobic wrote:

> Carlos E. R. wrote:
> 
> >> Auth should have happened before mail from.
> > 
> > I believe they do it on purpose :-(
> 
> Can't help you there, I'm afraid.

I know, I know, I'm just grumbling aloud, letting steam out.


> > Worse, all Spanish ISP's and mail accounts I have do the same, meaning I 
> > can't relay any of my redirector addreses like sourceforge or ieee.
> 
> It would probably be the best solution to use a virtual private server,
> they cost about 10 Euro per month, that will give you a fixed IP, correct
> dns/reverse dns and probably a domain name of your choice.

I have thought of that, but the expense is not justified (yet).


> >> /etc/postfix/sender_relayhosts:
> >> [EMAIL PROTECTED]  [relayhost]
> > 
> > But... I have a doubt. Will that relayhost be used for all mail sent from 
> > [EMAIL PROTECTED], or only to those destinations in the transport file?
> 
> Yes, it will be used solely based on the sender address then (if the
> address is found in the sender_dependend_relayhost_maps).

Pity. Seems I can't get all :-}


> > Meaning, I want to send all my email direct, except to those destinations 
> > I define in the transport file which sould use a relay choosed on the from.
> > 
> > Alternatively, send always via relay defined in sender_relayhosts, except 
> > to some destinations I want to send direct.
> 
> Okay, this might get really geeky and cumbersome, but you could
> theoretically set up two instances of Postfix (not listeners!), where the
> first instance is trying to send directly with "soft_bounce=yes" and
> fallback_transport = smtp:[ip-second-instance], so rejected mails will
> will be transfered to the second instance.
> 
> This instance knows, that all mails have to be relayed via a relayhost, so
> it is configured to use sender_dependent_relayhost_maps with soft_bounce=no.

Uau...

> That would probably do most of what you want to achieve, but it is quite a
>  bit of overhead to set up and manage. I have a few doubts, if it is
> really worth the effort.

Yes... very doubtfull... :-?

My current procedure is easier to maintain: change the configuration when 
I have to send an email trhough a different route. And, it wouldn't solve 
the problem of sending emails with redirector aliasses.

The advantage now is that I have learnt a an alternative place to set it 
up, based on "from" instead than in "to", and I can at last use a method 
to relay (almost) everything. I could create now an script instantly 
setting up/down relaying. It's something.

Another method would be to have a fixed IP, and use it for sending, but 
that would be a different can of worms, I guess.



> > Got it, thanks. :-)
> 
> Okay, unfortunately I've seen too many ISPs who silently delete unwanted
> mails.

Me too :-/

At least, my main one doesn't do it, but someplaces I send to do. They 
accept the email, but it never reaches the destination. Worse, their users 
think that the problem is mine because I'm a geek or something. Of course, 
as I use linux, I must have done something wrong. :-(

Nowdays, email is less reliable than surface paper mail.

- -- 
Cheers,
       Carlos E. R.
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