[Exim] using exim with fetchmail on a debian box

I'm failing to setup a simple mail system quering
a pop3 server on a remote nonpermanent internet
connection.
A helpful person on this list gave me some guidance
a few weeks ago, yet now he seems to have unsubscribed.

For the first setup I would just like to operate
on one box, fetchmail, exim and mutt installed.

To get exim running .fetcmailrc containes:
mda /usr/sbin/exim.

The test I ran 2 times was:

rland@MINI:~$ fetchmail -k -vv >> fetch2.test
fetchmail: Command not supported.
#exim: neither action flags nor mail addresses given
fetchmail: MDA exited abnormally or returned nonzero status
#exim: neither action flags nor mail addresses given
fetchmail: MDA exited abnormally or returned nonzero status
#exim: neither action flags nor mail addresses given
fetchmail: socket error while fetching from pop.btx.dtag.de

...ploting a error for each of the three messages awaiting on
the pop server on both of tests.
The file below shows errors relating to unexpected message
lengths. Which options does exim expect to get a smooth
running retrieval?

Later I would like to ask for some help on the options
the mentioned helpful person provided.

=========================file: fetch2.test =============================
fetchmail: 5.3.3 querying pop.btx.dtag.de (protocol POP3) at Thu, 21 Nov
2002 20
:04:08 +0100 (CET)
fetchmail: POP3< +OK T-Online POP3 Server fpopd ready.
fetchmail: POP3> USER robert.land
fetchmail: POP3< +OK Ok.
fetchmail: POP3> PASS *
fetchmail: POP3< +OK Ok.
fetchmail: selecting or re-polling default folder
fetchmail: POP3> STAT
fetchmail: POP3< +OK 3 10913
fetchmail: POP3> LAST
fetchmail: POP3< -ERR Command not supported.
fetchmail: POP3> UIDL
fetchmail: POP3< +OK Ok.
fetchmail: POP3< 1 3eda6915804a3386
fetchmail: POP3< 2 66b483538ff36278
fetchmail: POP3< 3 1915450f92f7ae2d
fetchmail: POP3< .
3 messages for robert.land at pop.btx.dtag.de (10913 octets).
fetchmail: POP3> LIST
fetchmail: POP3< +OK 3 messages.
fetchmail: POP3< 1 3731
fetchmail: POP3< 2 2157
fetchmail: POP3< 3 5025
fetchmail: POP3< .
fetchmail: POP3> RETR 1
fetchmail: POP3< +OK Ok.
reading message 1 of 3 (3731 octets)
About to rewrite Return-Path:
<bounce-debian-user=robert.land=t-online.de@lists.
debian.org>
Rewritten version is Return-Path:
<bounce-debian-user=robert.land=t-online.de@li
sts.debian.org>

About to rewrite To: debian-user@???
Rewritten version is To: debian-user@???

About to rewrite From: Kirk Strauser <kirk@???>
Rewritten version is From: Kirk Strauser <kirk@???>

About to rewrite Sender: Kirk Strauser <kirk@???>
Rewritten version is Sender: Kirk Strauser <kirk@???>

About to rewrite Resent-From: debian-user@???
Rewritten version is Resent-From: debian-user@???

About to rewrite Resent-Sender: debian-user-request@???
Rewritten version is Resent-Sender: debian-user-request@???

fetchmail: about to deliver with: /usr/sbin/exim
fetchmail: message 1 was not the expected length (3817 actual != 3731
expected)
not flushed
fetchmail: POP3> RETR 2
fetchmail: POP3< +OK Ok.
reading message 2 of 3 (2157 octets)
About to rewrite Return-Path:
<bounce-debian-user=robert.land=t-online.de@lists.
debian.org>
Rewritten version is Return-Path:
<bounce-debian-user=robert.land=t-online.de@li
sts.debian.org>

About to rewrite From: Matthew Daubenspeck <matt@???>
Rewritten version is From: Matthew Daubenspeck <matt@???>

About to rewrite To: debian-user@???
Rewritten version is To: debian-user@???

About to rewrite Resent-From: debian-user@???
Rewritten version is Resent-From: debian-user@???

About to rewrite Resent-Sender: debian-user-request@???
Rewritten version is Resent-Sender: debian-user-request@???

fetchmail: about to deliver with: /usr/sbin/exim
fetchmail: message 2 was not the expected length (2206 actual != 2157
expected)
not flushed
fetchmail: POP3> RETR 3
fetchmail: POP3< +OK Ok.
reading message 3 of 3 (5025 octets)
About to rewrite Return-Path:
<bounce-debian-user=robert.land=t-online.de@lists.
debian.org>
Rewritten version is Return-Path:
<bounce-debian-user=robert.land=t-online.de@li
sts.debian.org>

About to rewrite From: "Charlie Reiman" <creiman@???>
Rewritten version is From: "Charlie Reiman" <creiman@???>

About to rewrite To: <westk@???>, <debian-user@???>
Rewritten version is To: <westk@???>, <debian-user@???>

About to rewrite Resent-From: debian-user@???
Rewritten version is Resent-From: debian-user@???

About to rewrite Resent-Sender: debian-user-request@???
Rewritten version is Resent-Sender: debian-user-request@???

fetchmail: about to deliver with: /usr/sbin/exim
fetchmail: SIGPIPE thrown from an MDA or a stream socket error
fetchmail: swapping UID lists
fetchmail: Query status=2 (SOCKET)
fetchmail: Writing fetchids file.
fetchmail: normal termination, status 2
fetchmail: Writing fetchids file.
fetchmail: terminated with signal 13
fetchmail: Writing fetchids file.
(END)