I've got VPS server based on CentOS with DirectAdmin on it. Some of emails sending to me are bounced with message <receiver@example1.com>: 550 Verification failed for <sender@example2.com> \r\n Sender verify failed
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What can I do to allow this messages come to my email?
Some exim logs:
2017-09-30 07:47:45 H=somecloudserver.com [xxx.xxx.xxx.xxx] sender verify fail for <sender@example2.com>:
2017-09-30 07:47:45 H=somecloudserver.com [xxx.xxx.xxx.xxx] X=TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256 CV=no F=<sender@example2.com> rejected RCPT <receiver@example1.com>: Sender verify failed
2017-09-30 07:47:45 H=somecloudserver.com [xxx.xxx.xxx.xxx] incomplete transaction (QUIT) from <sender@example2.com>