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Re: (OT) ISP's that don't allow relaying
Hi,
I see the biggest usage of the relay when I send out mails to several
people, especially with attachments. Without a relay the same mail would go
once for each recipient over the wire while when using a relay it goes only
once.
If you have a fast enough line, you might not care. If not, then it's an
argument.
Schlomo
----- Original Message -----
From: "Ehud Karni" <ehud@unix.simonwiesel.co.il>
To: <linux-il@linux.org.il>
Sent: Monday, December 17, 2001 8:36 PM
Subject: Re: (OT) ISP's that don't allow relaying
> On Sun, 16 Dec 2001 15:46:05 +0200, Nadav Har'El <nyh@math.technion.ac.il>
wrote:
> >
> > As for the question the original poster had: when you log in, you have
an
> > ISP, so use its SMTP server as your mail relay. For example, say you log
> > in using Barak. Then use mail.barak.net.il as your mail relay. It's not
> > rocket science!! And please don't listen to the people who are telling
you
> > to run an SMTP server on your own personal computer. This solution is
wrong
> > on so many levels (spam reduction is only one of them)...
>
> I don't agree with you here. When we connected our systems to the
> Internet I used our ISP (Internet Zahav) mail relay for sending mail.
> After sometime (when more users were connected to the ISP) some of my
> mails were blocked because of their origin (Internet Zahav mail).
> I changed my sendmail configuration NOT to use relay (actually, only
> 2 systems here which have their incoming port 25 open on the firewall
> are connected directly, the other 10 are relaying through one of them).
>
> I configured the sendmail of a friend's machine (Linux, ADSL, no fixed
> IP, he is using NO-IP dynamic DNS) to work on it's own (no relaying)
> and it works fine.
>
> My advice is: if your computer is connected almost all the time, you
> don't need relay and you better off without it.
>
> I think that the reported problem of not being able to post from
> "dial-up" connection has to do with lacking of reverse DNS (i.e. the
> IP used has no name assigned to it). This is a problem with some of
> the ISPs (e.g. Kavey-Zahav) and not others (e.g. Netvision) which
> assign names to all their IPs.
>
> Ehud.
>
>
> --
> Ehud Karni Tel: +972-3-7966-561 /"\
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>
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