seit einigen Tagen wird mein Server als "Spamschleuder" misbraucht. Ich dachte immer, mir kann sowas nicht passieren, da ich Dkim, Dmarc, usw. gesetzt habe, nun hat es mich nach über 5 Jahren eigener Server doch erwischt. Leider kann ich aus der Log nicht erkennen woher das kommt und hoffe nun auf Eure Hilfe. Anbei ein Auszug aus der Log:
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Sep 13 10:33:42 server postfix/smtpd[699843]: connect from localhost[127.0.0.1]
Sep 13 10:33:42 server postfix/smtpd[699843]: 4341068003A7: client=localhost[127.0.0.1]
Sep 13 10:33:42 server postfix/pickup[692753]: 53768680134A: uid=0 from=<dkb.23c2792f@mail1-dkb-de.xyz>
Sep 13 10:33:42 server postfix/smtpd[699843]: 556A0680146A: client=localhost[127.0.0.1]
Sep 13 10:33:42 server postfix/cleanup[699846]: 53768680134A: message-id=<1b12bc63f125f193a86b167c7a7182bc@mail1-dkb-de.xyz>
Sep 13 10:33:42 server opendkim[1022]: 53768680134A: s=default d=mail1-dkb-de.xyz a=rsa-sha256 SSL
Sep 13 10:33:42 server postfix/smtpd[699843]: 6727A6801471: client=localhost[127.0.0.1]
Sep 13 10:33:42 server postfix/qmgr[2295]: 53768680134A: from=<dkb.23c2792f@mail1-dkb-de.xyz>, size=29532, nrcpt=1 (queue active)
Sep 13 10:33:42 server postfix/pickup[692753]: 71FDB68003A7: uid=0 from=<dkb.96530145@mail1-dkb-de.xyz>
Sep 13 10:33:42 server postfix/cleanup[699846]: 71FDB68003A7: message-id=<0bdcf8e8c382895f60e83ad68d3470fd@mail1-dkb-de.xyz>
Sep 13 10:33:42 server opendkim[1022]: 71FDB68003A7: s=default d=mail1-dkb-de.xyz a=rsa-sha256 SSL
Sep 13 10:33:42 server postfix/smtpd[699843]: 8339E6801541: client=localhost[127.0.0.1]
Sep 13 10:33:42 server postfix/qmgr[2295]: 71FDB68003A7: from=<dkb.96530145@mail1-dkb-de.xyz>, size=29532, nrcpt=1 (queue active)
Sep 13 10:33:42 server postfix/pickup[692753]: 83A9C680146A: uid=0 from=<dkb.42be95a3@mail1-dkb-de.xyz>
Sep 13 10:33:42 server postfix/cleanup[699846]: 83A9C680146A: message-id=<8e063c781dc05a59a6c19bd93089e3e0@mail1-dkb-de.xyz>
Sep 13 10:33:42 server opendkim[1022]: 83A9C680146A: s=default d=mail1-dkb-de.xyz a=rsa-sha256 SSL
Sep 13 10:33:42 server postfix/smtpd[699843]: 9A4C46801552: client=localhost[127.0.0.1]
Sep 13 10:33:42 server postfix/qmgr[2295]: 83A9C680146A: from=<dkb.42be95a3@mail1-dkb-de.xyz>, size=29552, nrcpt=1 (queue active)
Sep 13 10:33:42 server postfix/pickup[692753]: 9C9FB6801471: uid=0 from=<dkb.6145bc6f@mail1-dkb-de.xyz>
Sep 13 10:33:42 server postfix/cleanup[699846]: 9C9FB6801471: message-id=<85626e1bb71661734fd134459d3addf6@mail1-dkb-de.xyz>
Sep 13 10:33:42 server opendkim[1022]: 9C9FB6801471: s=default d=mail1-dkb-de.xyz a=rsa-sha256 SSL
Sep 13 10:33:42 server postfix/smtpd[699843]: BF3106801632: client=localhost[127.0.0.1]
Sep 13 10:33:42 server postfix/qmgr[2295]: 9C9FB6801471: from=<dkb.6145bc6f@mail1-dkb-de.xyz>, size=29508, nrcpt=1 (queue active)
Sep 13 10:33:42 server postfix/pickup[692753]: CCDE96801552: uid=0 from=<dkb.88cc0fc1@mail1-dkb-de.xyz>
Sep 13 10:33:42 server postfix/cleanup[699846]: CCDE96801552: message-id=<3ca89ad34fdc3e024f8d19b4907a063c@mail1-dkb-de.xyz>
Sep 13 10:33:42 server opendkim[1022]: CCDE96801552: s=default d=mail1-dkb-de.xyz a=rsa-sha256 SSL
Sep 13 10:33:42 server postfix/smtpd[699843]: DF92A680232C: client=localhost[127.0.0.1]
Sep 13 10:33:42 server postfix/qmgr[2295]: CCDE96801552: from=<dkb.88cc0fc1@mail1-dkb-de.xyz>, size=29513, nrcpt=1 (queue active)
Sep 13 10:33:42 server postfix/pickup[692753]: E037A6801541: uid=0 from=<dkb.6ba2dbb2@mail1-dkb-de.xyz>
Sep 13 10:33:42 server postfix/cleanup[699846]: E037A6801541: message-id=<a6f8c8671f0a8dd7630155e7a85d8158@mail1-dkb-de.xyz>
Sep 13 10:33:42 server opendkim[1022]: E037A6801541: s=default d=mail1-dkb-de.xyz a=rsa-sha256 SSL
Sep 13 10:33:43 server postfix/smtpd[699843]: 0F8F2680564A: client=localhost[127.0.0.1]
Sep 13 10:33:43 server postfix/qmgr[2295]: E037A6801541: from=<dkb.6ba2dbb2@mail1-dkb-de.xyz>, size=29518, nrcpt=1 (queue active)
Sep 13 10:33:43 server postfix/pickup[692753]: 194716801632: uid=0 from=<dkb.2ada9abd@mail1-dkb-de.xyz>
Sep 13 10:33:43 server postfix/cleanup[699846]: 194716801632: message-id=<5dcdaf152c07e76c9f2c447f2f0201bc@mail1-dkb-de.xyz>
Sep 13 10:33:43 server opendkim[1022]: 194716801632: s=default d=mail1-dkb-de.xyz a=rsa-sha256 SSL
Sep 13 10:33:43 server postfix/smtpd[699843]: 290DA6805657: client=localhost[127.0.0.1]
Sep 13 10:33:43 server postfix/qmgr[2295]: 194716801632: from=<dkb.2ada9abd@mail1-dkb-de.xyz>, size=29497, nrcpt=1 (queue active)
Sep 13 10:33:43 server postfix/pickup[692753]: 29D0B680564A: uid=0 from=<dkb.c8819442@mail1-dkb-de.xyz>
Sep 13 10:33:43 server postfix/cleanup[699846]: 29D0B680564A: message-id=<20abeafe701ef3dadd3415e518671a59@mail1-dkb-de.xyz>
Sep 13 10:33:43 server opendkim[1022]: 29D0B680564A: s=default d=mail1-dkb-de.xyz a=rsa-sha256 SSL
Sep 13 10:33:43 server postfix/smtpd[699843]: 3DCE06805659: client=localhost[127.0.0.1]
Sep 13 10:33:43 server postfix/qmgr[2295]: 29D0B680564A: from=<dkb.c8819442@mail1-dkb-de.xyz>, size=29552, nrcpt=1 (queue active)
Sep 13 10:33:43 server postfix/pickup[692753]: 3E6B1680232C: uid=0 from=<dkb.1309f234@mail1-dkb-de.xyz>
Sep 13 10:33:43 server postfix/cleanup[699846]: 3E6B1680232C: message-id=<790d44942a05e0b12144393a74a952c5@mail1-dkb-de.xyz>
Sep 13 10:33:43 server opendkim[1022]: 3E6B1680232C: s=default d=mail1-dkb-de.xyz a=rsa-sha256 SSL
Sep 13 10:33:43 server postfix/smtpd[699843]: 56B366805665: client=localhost[127.0.0.1]
Sep 13 10:33:43 server postfix/qmgr[2295]: 3E6B1680232C: from=<dkb.1309f234@mail1-dkb-de.xyz>, size=29499, nrcpt=1 (queue active)
Vielen Dank schon mal an alle die mir helfen!