Here is the last one I got. As you can see it was send to root at csusb.edu, a restricted distribution group, not obeying /etc/aliases or MAILTO definition in crontab. Message Trace: ---------------------- Cron <root at mailcampaign1> run-parts /etc/cron.hourly Sender:root at csusb.edu Recipient:root at csusb.edu ReceivedProcessedNot delivered StatusThe message was sent to the following group, which doesn't allow messages from external senders: Group: root at csusb.edu How to fix itTo accept messages from external senders, you can change the delivery management setting for this group. Go to Groups. Double-click the group name. Click Delivery management, and choose Senders inside and outside my organization. Choose Save. Message Events DATE (UTC)EVENTDETAIL 7/19/2017 8:15:56 PMReceiveMessage received by: CY1PR08MB1829 7/19/2017 8:15:56 PMFailReason: [{LED=550 5.7.133 RESOLVER.RST.SenderNotAuthenticatedForGroup; authentication required; Delivery restriction check failed because the sender was not authenticated when sending to this group};{MSG=};{FQDN=};{IP=};{LRT=}] 7/19/2017 8:15:56 PMSpam Diagnostics Additional Properties Message ID:<20170719201555.A5077100E776C at mailcampaign1.csusb.edu> Message size:12 KB >From IP:139.182.75.70 To IP: --- Chad Cordero Information Technology Consultant Enterprise & Cloud Services Information Technology Services California State University, San Bernardino 5500 University Pkwy San Bernardino, CA 92407-2393 Main Line: 909/537-7677 Direct Line: 909/537-7281 Fax: 909/537-7141 http://support.csusb.edu/ --- Disclaimer: This e-mail message is for the sole use of the intended recipient(s) and may contain confidential and privileged information protected from disclosure. If the reader of this message is not the intended recipient, or an employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please notify us immediately by replying to the message and deleting it from your computer. From: CentOS <centos-bounces at centos.org> on behalf of Alexander Dalloz <ad+lists at uni-x.org> Reply-To: CentOS mailing list <centos at centos.org> Date: Wednesday, July 19, 2017 at 2:49 PM To: "centos at centos.org" <centos at centos.org> Subject: Re: [CentOS] Cron sending to root after changing MAILTO Am 19.07.2017 um 23:42 schrieb Chad Cordero: I have “root:ecssupport at csusb.edu” in my /etc/aliases file already. Chad Cordero Then please provide log information about the mails to root being relayed to your Exchange host. Alexander _______________________________________________ CentOS mailing list CentOS at centos.org https://lists.centos.org/mailman/listinfo/centos