outbound.protection.outlook.com

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    Issue or by design? outbound.protection.outlook.com knocking on port25?

    I am experiencing some strange logging: Jul 14 19:14:53 PMG8-CT postfix/postscreen[27294]: CONNECT from [52.101.81.94]:30283 to [192.168.12.34]:25 Jul 14 19:14:53 PMG8-CT postfix/postscreen[27294]: PASS OLD [52.101.81.94]:30283 Jul 14 19:14:54 PMG8-CT postfix/smtpd[27297]: connect from...