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On Saturday 21 December 2002 8:16 am, Paul Scott wrote:
> Alan Chandler wrote:
...
> >but for instance, I do
> >
> >fetchmail ->smtp->exim (as MTA)->pipe->spamassassin->exim(as
> >sendmail)->$HOME/Maildir->courier->pop3->kmail
>
> Can you tell me what configuration causes any of those connections
> (except for those which have already been answered in this thread).
Fetchmail
=========
Runs as a daemon (debian package loaded and started by /etc/init.d/fetchmail)
- - I have listed some of my /etc/fetchmailrc below (I actually poll several
seperate ISPs and I also have 5 different blueyonder user lines for different
accounts)
poll pop3.blueyonder.co.uk no dns proto POP3 tracepolls
aka blueyonder.co.uk
localdomains chandlerfamily.org.uk
user "ac003a3222" password "xxxxx" forcecr is * smtpaddress fetchmail.home
this is the multidrop case (catchall for not specific chandlerfamily.org.uk
addresses). The specific line is like this
user "ac003a3222_5" password "xxxxx" forcecr is alan fetchall smtpaddress
fetchmail.home
which is where mail to [EMAIL PROTECTED] gets delivered to.
It passes mail via smtp to whatever is on port 25 of the machine. In my case
its exim, started via inetd. The relevant line in /etc/inetd.conf is ...
#:MAIL: Mail, news and uucp services.
smtp stream tcp nowait mail /usr/sbin/exim exim -bs
Exim
====
I think you asked some questions earlier about qualify_domain in exim.conf and
also I seem to remember a bit of the thread about relaying.
here are some relevant paramters (my home network behind the filewall all have
names *.home - mail from these machines is allowed to leave off the
@domainname part and if so, has roo.home added as the sender and
chandlerfamily.org.uk added as the recipient. exim regards localhost, *.home
and chandlerfamily.org.uk in mail addresses as local (ie it does not try to
forward them somewhere else). Note, I will only relay mail on if it comes
either locally or from the 10.0.10.0/24 address range (my internal network in
other words).
primary_hostname = mail.home
qualify_domain = roo.home
receiver_unqualified_hosts = *.home
qualify_recipient = chandlerfamily.org.uk
local_domains = localhost:*.home:chandlerfamily.org.uk
host_accept_relay = 127.0.0.1: 10.0.10.0/24
The following are parts of exim.conf that workout how to deliver mail. Please
note I have left a lot out (for instance, I also have mailing lists etc
supported but not shown). The bit related to spam checking is show. Mail
with a "real-" before the address avoids the spam filter, the rest of local
mail is checked how it arrived. Normally its from outside and is sent to the
check_spam deliverer, otherwise it falls through that check and is delivered
locally (or directly for mail if its not a known local user).
# This allows local delivery to be forced, avoiding spam filter, alias
# files and forwarding.
real_local:
prefix = real-
driver = smartuser
local_parts = /etc/exim/local-users
user = ${lc:$local_part}
transport = local_delivery
# Only Mail that I expect to deliver locally is checked for spam
spam_to_check:
driver = smartuser
transport = check_spam
condition=${if eq {$received_protocol} {spam_checked} {no} {${if eq
{$sender_address_domain} {chandlerfamily.org.uk} {no} {yes} }} }
# This director matches local user mailboxes.
# (I am being very restrictive on what I will allow - but see later)
localuser:
driver = smartuser
local_parts = /etc/exim/local-users
user = ${lc:$local_part}
transport = local_delivery
#
# Anything else that has not been handled is to be forced to alan
#
allelse:
driver = smartuser
transport=deliver_alan
The transports (again only some) in exim.conf define how it is delivered
(either locally into a file or piped through spamassassin).
local_delivery:
driver = appendfile
group = mail
mode = 0660
mode_fail_narrower = false
envelope_to_add = true
return_path_add = true
directory=/home/${lc:$local_part}/Maildir
maildir_format = true
prefix = ""
check_spam:
driver = pipe
user = mail
group = mail
prefix =
suffix =
command = spamc -f | exim -oMr spam_checked ${if eq {$sender_address} {} {}
{-f $sender_address}} \$[EMAIL PROTECTED]
.uk
ignore_status = true
use_shell = true
path = /usr/bin:/usr/sbin
Courier
=======
Courier just is a standard debian package. It expects to find the mail in
$HOME/Maildir of each user - which it authenticates users who connect via
pop3 or via imap.
Kmail
=====
This is just configured to read mail via pop3 to mail.home and to send mail
via smtp to mail.home. Mail received from kmail by exim is then routed
internally (if its in the "local_domains" listed above), or via blueyonder
(my isp) if its for the rest of the internet. The relevant part of exim.conf
is
# Send all mail to a smarthost
smarthost:
driver = domainlist
transport = remote_smtp
route_list = "* smtp.blueyonder.co.uk bydns_a"
with a transport
remote_smtp:
driver = smtp
headers_rewrite = *@*home $[EMAIL PROTECTED]
return_path = ${lc:${sender_address_local_part}}@chandlerfamily.org.uk
With any part that has a @*home address being rewritten to
@chandlerfamily.org.uk.
I trust this lot answers your questions - sorry its a bit long. If you need
any part explained, copy it back and I will try and answer.
- --
Alan Chandler
[EMAIL PROTECTED]
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