Just answering the easy question, but at some length :-)
On Mon, 21 Oct 2002, Pierre A. Humblet wrote:
> Greg Matheson wrote:
> > I've been playing around with exim on Win98 behind a firewall,
> > more for fun than because I need to read email this way.
> > Using fetchmail to get mail via POP presented some problems with
> > exim running as daemon. Exim routed it right back to the
> > smarthost. I solved that with a new router above dnslookup.
> Sorry Greg, I am not sure how fetchmail works and how it interacts
> with exim. Where does it get mail from and where does it put it?
Fetchmail does POP & IMAP, getting mail from smarthosts. I have in
.fetchmailrc:
poll ms.chinmin.edu.tw protocol pop3 port 110 authenticate ssh
user "lang" with password "secretno1" is "greg" here
poll mail.chinmin.edu.tw protocol pop3 authenticate ssh
user "cid88201" with password "secretno2" is "greg" here
The man page says:
As each message is retrieved fetchmail normally delivers
it via SMTP to port 25 on the machine it is running on
(localhost), just as though it were being passed in over a
normal TCP/IP link. The mail will then be delivered
locally via your system's MDA (Mail Delivery Agent, usu-
ally sendmail(8) but your system may use a different one
such as smail, mmdf, exim, or qmail). All the delivery-
control mechanisms (such as .forward files) normally
available through your system MDA and local delivery
agents will therefore work.
If no port 25 listener is available, but your fetchmail
compilation detected or was told about a reliable local
MDA, it will use that MDA for local delivery instead.
Here is what is written in the headers by fetchmail and exim for
an email to me from the cygwin list:
>From cygwin-return-59929-lang=ms.chinmin.edu.tw@??? Sat Oct 19 21:48:32
+2002
Return-path: <cygwin-return-59929-lang=ms.chinmin.edu.tw@???>
Envelope-to: greg@localhost
Delivery-date: Sat, 19 Oct 2002 21:48:32 +0800
Received: from [127.0.0.1] (helo=localhost)
by 6505.LM-1042 with esmtp (Exim 4.10)
id H48ECT-006WG5-00
for greg@localhost; Sat, 19 Oct 2002 21:48:29 +0800
Received: from ms.chinmin.edu.tw [140.126.111.3]
by localhost with POP3 (fetchmail-5.9.13)
for greg@localhost (single-drop); Sat, 19 Oct 2002 21:48:29 +0800 (TST)
Received: from sources.redhat.com (sources.redhat.com [209.249.29.67])
by ms.chinmin.edu.tw (8.11.6/8.11.6) with SMTP id g9JDWQu04163
for <lang@???>; Sat, 19 Oct 2002 21:32:29 +0800
Fetchmail seems to be identifying itself with a 'helo localhost'
and it looks like it wants the mail delivered to greg@localhost
Wait. I just realize that my claim about a re-routing problem
was a mistake. The mail wasn't being re-routed back out on to
the Internet. It was being BOUNCED because greg@localhost was an
unroutable address.
I THOUGHT the default router, dnslookup, was catching it and
routing it back out on to the Internet, just as it would have an
email I wrote. I guess I was confusing $sender-address
and $recipients, because of the mailing list convention of
keeping the To: header pointing to the list address.
I'm still thinking in terms of headers, rather than envelopes.
I also didn't realize that the address greg@localhost would not
automatically be recognized as a local domain.
I have added localhost to +localdomains and it seems to be
working.
domainlist local_domains = @ : localhost
[I had put some extra routers using the redirect driver
ahead of dnslookup, in the routers section, but this wasn't
necessary.]
I think this is probably useful for someone trying to use exim
and fetchmail together.
I'm CCing this to the exim list. I want to express my
appreciation of you for porting exim to cygwin.
Christmas came early this year :-)
--
Greg Matheson The best jokes are
Chinmin College those you play on
yourself.
Taiwan Penpals Archive <URL: http://penpals.chinmin.edu.tw/>
