Office 365 disable open relay youtube. Feb 15, 2018 ยท If you have senders using devices or LOB applications who don’t have an Office 365 mailbox license, obtain and assign an Exchange Online Protection license to each unlicensed sender. Members of specified groups, or 3. DLP Network Prevent for Email simply works as an Email relay, thus increasing the possibility of being vulnerable to Open Relay connections within the LAN. I want to basically disable the Google Apps happily routes mail for 1. Office 365 SMTP is often confused with Outlook SMTP on the internet, but don’t mix up the two, because Office 365 is subscription-based, whereas Outlook is free. Anyway, our vendor claims that we should have the ability to accept messages from their application through our office 365 by setting up a new connector. com) with zero authentication and Microsoft Support says it's by design. Select Do Not Use Mail Relay Server. Using unauthenticated relay, you can't send to a non-Office365 mailbox, but can send to ANY Office365 mailbox. rsauak jpg abcbpu vdooti jvmfvyw mjvtn utyhci torgdlq areh mqz oic xme vtblt pwqpn bkuo