Ich habe um die Problematik zu testen Testaccounts angelegt. Seltsam ist, dass der Fehler nicht bei den Testaccounts auftritt.
Hier ist das Log und die E-Mail dazu.
Apr 17 08:27:14 smtp10 postfix/postscreen[12597]: CONNECT from [82.100.192.202]:35856 to [172.18.165.253]:25
Apr 17 08:27:14 smtp10 postfix/postscreen[12597]: PASS OLD [82.100.192.202]:35856
Apr 17 08:27:14 smtp10 postfix/smtpd[12605]: connect from smtp02.datenzentrum.biz[82.100.192.202]
Apr 17 08:27:15 smtp10 pmgpolicy[12151]: SPF says pass
Apr 17 08:27:15 smtp10 postfix/smtpd[12605]: 018FB1C08AF: client=smtp02.datenzentrum.biz[82.100.192.202]
Apr 17 08:27:15 smtp10 postfix/cleanup[12608]: 018FB1C08AF: message-id=<
7ea7d5c807194df5b0f21480061a8ced@EXC-01.webalytics.local>
Apr 17 08:27:15 smtp10 postfix/qmgr[853]: 018FB1C08AF: from=<
SchaeferM@webalytics.de>, size=52087, nrcpt=1 (queue active)
Apr 17 08:27:15 smtp10 postfix/smtpd[12605]: disconnect from smtp02.datenzentrum.biz[82.100.192.202] ehlo=2 starttls=1 mail=1 rcpt=1 data=1 quit=1 commands=7
Apr 17 08:27:15 smtp10 pmg-smtp-filter[12489]: 2020/04/17-08:27:15 CONNECT TCP Peer: "[127.0.0.1]:53762" Local: "[127.0.0.1]:10024"
Apr 17 08:27:15 smtp10 pmg-smtp-filter[12489]: 1C0E305E994C432AA95: new mail message-id=<
7ea7d5c807194df5b0f21480061a8ced@EXC-01.webalytics.local>#012
Apr 17 08:27:20 smtp10 pmg-smtp-filter[12489]: 1C0E305E994C432AA95: SA score=0/5 time=5.252 bayes=0.00 autolearn=ham autolearn_force=no hits=AWL(1.021),BAYES_00(-1.9),KAM_DMARC_STATUS(0.01),SPF_HELO_NONE(0.001),SPF_PASS(-0.001),TVD_SPACE_RATIO(0.001)
Apr 17 08:27:20 smtp10 postfix/smtpd[12618]: connect from localhost.localdomain[127.0.0.1]
Apr 17 08:27:20 smtp10 postfix/smtpd[12618]: 88F121C0E42: client=localhost.localdomain[127.0.0.1], orig_client=smtp02.datenzentrum.biz[82.100.192.202]
Apr 17 08:27:20 smtp10 postfix/cleanup[12608]: 88F121C0E42: message-id=<
7ea7d5c807194df5b0f21480061a8ced@EXC-01.webalytics.local>
Apr 17 08:27:20 smtp10 postfix/qmgr[853]: 88F121C0E42: from=<
SchaeferM@webalytics.de>, size=52752, nrcpt=1 (queue active)
Apr 17 08:27:20 smtp10 postfix/smtpd[12618]: disconnect from localhost.localdomain[127.0.0.1] ehlo=1 xforward=1 mail=1 rcpt=1 data=1 commands=5
Apr 17 08:27:20 smtp10 pmg-smtp-filter[12489]: 1C0E305E994C432AA95: accept mail to <
haasek@toskanaworld.net> (88F121C0E42) (rule: default-accept)
Apr 17 08:27:20 smtp10 pmg-smtp-filter[12489]: 1C0E305E994C432AA95: processing time: 5.394 seconds (5.252, 0.075, 0)
Apr 17 08:27:20 smtp10 postfix/lmtp[12613]: 018FB1C08AF: to=<
haasek@toskanaworld.net>, relay=127.0.0.1[127.0.0.1]:10024, delay=5.6, delays=0.18/0/0/5.4, dsn=2.5.0, status=sent (250 2.5.0 OK (1C0E305E994C432AA95))
Apr 17 08:27:20 smtp10 postfix/qmgr[853]: 018FB1C08AF: removed
Apr 17 08:27:21 smtp10 postfix/smtp[12619]: 88F121C0E42: to=<
haasek@toskanaworld.net>, relay=172.18.0.22[172.18.0.22]:25, delay=0.53, delays=0.01/0/0.04/0.48, dsn=2.6.0, status=sent (250 2.6.0 <
7ea7d5c807194df5b0f21480061a8ced@EXC-01.web
alytics.local> [InternalId=1356908] Queued mail for delivery)
Apr 17 08:27:21 smtp10 postfix/qmgr[853]: 88F121C0E42: removed