[exim] Problem with exim 4.43 and freebsd 4.9-RC

Dear users,

since the last weeks I've got in trouble with one of my outgoing relay
server. One of the two servers is not longer able to send mails to special
domains like t-online.de, gmx and web.de. The other relay server, with same
config, works fine.

I tried to find the ip addresses of the host on the rbl lists, but there are
no entries.

System config: FreeBSD 4.9-RC
Exim: 4.43
FreeBSD Port: exim-mysql-4.43+28_1
Clamd

I have this problem since using update from Exim 4.24 to Exim 4.43. Does
anybody have any idea, what this could be.

In example, these are some mainlog entries:

2005-01-06 09:31:21 1CmT3B-000Niv-Hu <= me@??? H=ns4.lmnk.de
(mail4.lmnk.de) [212.79.197.11] P=esmtps X=TLSv1:AES256-SHA:256 S=821
id=03ec01c4f3c9$ec2bb540$fe78a8c0@LARS
2005-01-06 09:32:16 1CmT3B-000Niv-Hu SMTP error from remote mailer after
MAIL FROM:<me@???> SIZE=1869: host mx-ha01.web.de [217.72.192.149]: 421
mx28.web.de: SMTP command timeout - closing connection
2005-01-06 09:33:07 1CmT3B-000Niv-Hu == carioca1@??? R=dnslookup
T=remote_smtp defer (0): SMTP error from remote mailer after MAIL
FROM:<me@???> SIZE=1869: host mx-ha02.web.de [217.72.192.188]: 421
mx31.web.de: SMTP command timeout - closing connection

2005-01-05 16:04:25 1CmCi1-000MlV-DK <= me@??? H=ns4.lmnk.de
(mail4.lmnk.de) [212.79.197.11] P=esmtps X=TLSv1:AES256-SHA:256 S=1456
id=BE01C022.21B3%me@???
2005-01-05 16:05:22 1CmCi1-000MlV-DK SMTP error from remote mailer after
MAIL FROM:<me@???> SIZE=2528: host mx-ha01.web.de [217.72.192.149]: 421
mx29.web.de: SMTP command timeout - closing connection
2005-01-05 16:06:13 1CmCi1-000MlV-DK == janneumann@??? R=dnslookup
T=remote_smtp defer (0): SMTP error from remote mailer after MAIL
FROM:<me@???> SIZE=2528: host mx-ha02.web.de [217.72.192.188]: 421
mx23.web.de: SMTP command timeout - closing connection

2005-01-04 16:49:18 1ClqvY-000ML4-4y <= me@??? H=ns4.lmnk.de
(mail4.lmnk.de) [212.79.197.11] P=esmtps X=TLSv1:AES256-SHA:256 S=4509872
id=BE007839.21A7%me@???
2005-01-04 16:50:37 1ClqvY-000ML4-4y Remote host mailin02.sul.t-online.de
[194.25.134.9] closed connection in response to MAIL FROM:<me@???>
SIZE=4572721
2005-01-04 16:53:58 1ClqvY-000ML4-4y == m.labann@??? R=dnslookup
T=remote_smtp defer (-18): Remote host mailin06.sul.t-online.de
[194.25.134.11] closed connection in response to MAIL FROM:<me@???>
SIZE=4572721