[Exim] remote delivery process count got out of step

Hi,

this is an Exim error message I have never seen before:

2002-08-28 12:18:54 17jzuY-0000Og-00 <= be@???
H=apollo.berdmann.de [192.168.1.2] P=esmtp S=4512
id=E17jzuY-0001Lb-00@???
2002-08-28 12:18:55 17jzuY-0000Og-00 remote delivery process count got
out of step

It happened using Exim 3.35 on Linux 2.4.19.

This mail was bounced to two different addresses using mutt. Here's the
Exim mainlog of the host on which mutt bounced the mail:

2002-08-28 12:18:54 17jzuY-0001Lb-00 <= be@??? U=be
P=local S=4368 id=20020828121026.A5031@???
2002-08-28 12:18:54 17jzuY-0001Lb-00 => frank@??? R=smart_route
T=remote_smtp H=ente.berdmann.de [192.168.1.6] C="250 OK
id=17jzuY-0000Og-00"
2002-08-28 12:18:54 17jzuY-0001Lb-00 -> frank.sepke@???
R=smart_route T=remote_smtp H=ente.berdmann.de [192.168.1.6] C="250 OK
id=17jzuY-0000Og-00"
2002-08-28 12:18:54 17jzuY-0001Lb-00 Completed

What does "remote delivery process count got out of step" mean?

This bounced mail was not logged to be delivered but it was indeed
delivered to the destinations. Here are two Exim logfiles from the
recipient's mail servers stating having received the mail:

2002-08-28 12:18:56 17jzua-0004M2-00 <= be@???
H=frnk-d514e10f.dsl.mediaways.net (ente.berdmann.de) [213.20.225.15]
P=esmtp X=TLSv1:DES-CBC3-SHA:168 S=4761
id=E17jzuY-0001Lb-00@???
2002-08-28 12:18:57 17jzua-0004M2-00 => frank.sepke@???
R=amavis_router T=amavis
2002-08-28 12:18:57 17jzua-0004M2-00 Completed

2002-08-28 12:19:04 17jzui-0001wv-00 <= be@???
H=moutng.kundenserver.de [212.227.126.189] P=esmtp S=5075
id=E17jzuY-0001Lb-00@???
2002-08-28 12:19:07 17jzui-0001wv-00 => frank@??? R=amavis_router
T=amavis
2002-08-28 12:19:07 17jzui-0001wv-00 Completed