Hello, We deployed a new Centos 7.4.1708 with ISPConfig 3.1.8p1 and we make test receiving and sendig mail to Hotmail, Gmail and other of ours servers and is working fine, but we cannot received emails from a Domain from outllook. The logs says that there is a 451 4.3.5 Server configuration error, the domain has been added to the global whitelist , attached some of the logs: Nov 14 08:41:57 mail postfix/smtpd[31384]: NOQUEUE: filter: RCPT from mail-co1nam03on0091.outbound.protection.outlook.com[104.47.40.91]: <[email protected]>: Sender address triggers FILTER amavis:[127.0.0.1]:10026; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<NAM03-CO1-obe.outbound.protection.outlook.com> Nov 14 08:41:57 mail postfix/smtpd[31384]: NOQUEUE: reject: RCPT from mail-co1nam03on0091.outbound.protection.outlook.com[104.47.40.91]: 451 4.3.5 Server configuration error; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<NAM03-CO1-obe.outbound.protection.outlook.com> Thanks in advance
