Re: [nslu2-general] Re: NSLU2 MailServer for Dummies
- I'm not using postfix, but xmail. I found the easiest way was to define my own domain and just let the slug talk to the outside world rather than the ISP.
I found it very difficult to configure until I found this handbook which enabled me to have it up and running in less than an hour.
----- Original Message -----
Sent: Sunday, July 02, 2006 10:48 AM
Subject: [nslu2-general] Re: NSLU2 MailServer for Dummies
Thanks but I can "get" emails down to the slug but I don't know how to
configure Postfix to send them to my ISP.
Any ideas ..?
--- In firstname.lastname@example.org, "jwd_45244" <jwd_45244@...> wrote:
> try fetchmail to bring the e-mail back to your NSLU2.
> --- In email@example.com, "CGHOST98" <cghost98@> wrote:
> > Greetings All,
> > This is what I want to do:
> > 1. I have 3 ISP-issued POP3 email accounts, I want the NSLU2 to pull
> > the emails from my ISP and serve them to Outlook and a web-based email
> > portal. Therefore I have an ISP issued POP3 and SMTP server addresses
> > with a login/password.
> > 2. I want to use Postfix, Dovecot (or perhaps Cyrus) and maybe
> > SquirrelMail - or alternatives! I'm flexible.
> > My slug currently runs MySql, PHP5, Cherokee WebServer, FTP server and
> > of course shares my files on 2x80GB HDDs.
> > I've read the how-to articles for Media server on
> > http://www.nslu2-linux.org/ but I can't get the thing to work - and I
> > don't think I'm going the right way around it.
> > Can anybody please please write some - idiot proof (or close to)
> > instructions on how to get it to work - or even point me in the rigth
> > direction .... I'm a linux newbie but I'm learning!
> > Thanks in advance!!
> > - Peter
[Non-text portions of this message have been removed]
- I believe you want to set the 'relayhost' parameter in
/etc/postfix/main.cf. I don't know what you need to do regarding
providing authentication to that server.
Addressing another comment, an increasing number of sites blindly reject
all email originating at consumer IP addresses. It's harsh, but for every
message from a technically competent user with his own domain there's
easily 1000+ from hijacked PCs. (This is why sysadmins are not entirely
joking when they argue for the death penalty for spammers.)
Worse, some ISPs have started filtering outbound port 25 traffic. Same
argument -- they're cutting down on complaints (and bandwidth) by blocking
traffic that's 99.9+% illegitimate. Businesses should always block
outbound port 25 traffic from all but their authorized mail servers,
although few actually do.
You can forward mail through your ISP, but spam strikes again. Some ISPs
have started rewriting headers to show the 'correct' sender. E.g., while
you wanted to send mail from "bsmith@..." they can't distinguish
that from "customer.service@..." so they rewrite all headers as
My approach has been running my own virtual hosted server at tummy.com.
It's only $25/month and gets me around all of these hassles. It may not
be cost-effective for you -- I need to eat my own dog food if I claim to
be a competent Linux sysadmin.
> Thanks but I can "get" emails down to the slug but I don't know how to
> configure Postfix to send them to my ISP.
> Any ideas ..?