Does not work
Regular Expression - Sender - mail-.*outbound.protection.outlook.com
Feb 3 05:09:26 mailp postfix/smtpd[861]: connect from mail-eopbgr30134.outbound.protection.outlook.com[40.107.3.134]
Feb 3 05:09:26 mailp postfix/smtpd[861]: NOQUEUE: reject: RCPT from mail-eopbgr30134.outbound.protection.outlook.com[40.107.3.134]: 450 4.7.1 <YYY@YYY.com>: Recipient address rejected: Service is unavailable (try later); from=<ZZZZ@ZZZZ.ru> to=<YYY@YYY.com> proto=ESMTP helo=<EUR03-AM5-obe.outbound.protection.outlook.com>
Feb 3 05:09:27 mailp postfix/smtpd[861]: disconnect from mail-eopbgr30134.outbound.protection.outlook.com[40.107.3.134] ehlo=1 mail=1 rcpt=0/1 quit=1 commands=3/4
Greylist works