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Topic: Spam: some domain unknown can sent by our server

==== Required information ====
- iRedMail version (check /etc/iredmail-release):  0.9.7
- Linux/BSD distribution name and version: CentOS Linux release 7.2.1511
- Store mail accounts in which backend (LDAP/MySQL/PGSQL):  Ldap
- Web server (Apache or Nginx): Apache
- Manage mail accounts with iRedAdmin-Pro? iRedAdmin-Ldap-Pro
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
====

Some domain unknown can sent by our server, 
Server not open relay all IP.


maillog
Jul 31 08:08:54 mx postfix/qmgr[1725]: F045E17456: from=<info@gtland.com.tr>, size=604286, nrcpt=1 (queue active)
Jul 31 08:08:54 mx amavis[12939]: (12939-04) Passed CLEAN {RelayedInternal}, ORIGINATING/MYNETS LOCAL [127.0.0.1]:35678 <info@gtland.com.tr> -> <ADISORNB@wingonintertrade.com>, Queue-ID: 81BFD17450, Message-ID: <c266216d544ba352190a555edb175852@Ourdomain>, mail_id: Ci
_tZnXk1IeS, Hits: 3.141, size: 603508, queued_as: F045E17456, 817 ms, Tests: [ALL_TRUSTED=-1,FREEMAIL_FORGED_REPLYTO=2.503,HTML_IMAGE_
ONLY_32=0.001,HTML_MESSAGE=0.001,SUBJ_ALL_CAPS=1.625,T_OBFU_PDF_ATTACH=0.01,URIBL_BLOCKED=0.001]

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Re: Spam: some domain unknown can sent by our server

Please extract ALL related log from Postfix log file and iRedAPD log file, cannot help troubleshoot without full log.
FYI: http://www.iredmail.org/docs/file.locations.html