Jan 20 08:55:59 mx postfix/smtpd[7790]: NOQUEUE: reject: RCPT from mail-bn1bon0119.outbound.protection.outlook.com[157.56.111.119]: 450 4.2.0 <[email protected]>: Recipient address rejected: Greylisted for 300 seconds; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<na01-bn1-obe.outbound.protection.outlook.com>
/etc/postgrey/whitelist_clients
/.*outbound.protection.outlook.com$/