O365 – Outlook Connectivity issues: let’s walk before we run

By: Caio Ribeiro César We have seen customers troubleshooting most of their “Outlook Connectivity issues” with network tools such as netmon, wireshark, fiddler. I personally love using these tools, but I was once told: “you need to know what you are looking for, before you trace”. And after a while working in Service and Support,…


O365 – Spam Abuse NDR when emails are sent as “onmicrosoft.com”

By: Caio Ribeiro César and Robson Elias da Silva Support daily basis is to handle diversified scenarios. When multiple customers and partners are hitting the same issue or behavior, means we need to elaborate on what is the design of the product and how administrators should handle these problems. We have seen cases about external…


Office 365: we need to talk about Security

By: Caio Ribeiro César This post will comment some Compliance updates/functionalities available to O365 administrators. We will also discuss Security scenarios that are common in the daily life of support engineers. SecureScore Some customers call Support asking for feedback or ways to improve Security in O365. Secure Score is a tool that will do the…


Users can’t connect to Outlook in a 100% cloud, Federated Environment

By: Cesar Hara, Caio Ribeiro César Outlook Connectivity is known to be a high volume support topic. The one described in this post is about a 100% Cloud structure, with the domain being federated (ADFS 3.0 and WAP). Whenever administrators get Outlook Connectivity issues, they start by isolating the issue – there are dependencies for…


Office 365, latency and GEO-DNS or (The Unexpected Virtue of Cloud Resiliency Knowledge)

By: Caio Ribeiro César and Robson Elias da Silva Latency can occur in different scenarios. Sending emails in Outlook, attaching files to OWA, bulk actions done by the administrator in the EAC and so on. Not always the root cause is what we are going to describe below, so always start your troubleshooting by understanding…


O365 – How Mailbox Audit works in a Hybrid scenario

By: Caio Ribeiro César We have already discussed some of the Mailbox Audit functionalities in Office 365.  This time, we will focus on something a little bit more specific: hybrid environments and the cross premises access. Cross premises mailbox permission support is something relatively new: on-prem mailboxes accessing oncloud mailboxes and vice-versa for hybrid environments…


O365 – Error when trying to move a mailbox to the cloud “CreatingFolderHierarchy CommunicationErrorTransientException”

By: Caio Ribeiro César   When dealing with moving mailboxes to the cloud, we should remember that there are several steps involved in order to make it work. Troubleshooting online mailbox moves can simple as increasing your upload rate or somewhat complex as the example in this article. At first, we need to understand what…


Information Rights Managements – NDR: 550-5.7.1 Delivery not authorized, message refused. 550-5.7.1 (Exchange Server 2010)

Por: Pedro Gonzalez Martinez e Caio Ribeiro Cesar Technical Reviewer: Patricia Cifuentes Existem situações em que o usuário tenta enviar mensagens utilizando um template de IRM pelo Outlook/OWA e ele acaba recebendo a seguinte mensagem de erro (NDR): user1@domain.corp #550-5.7.1 Delivery not authorized, message refused. 550-5.7.1 Microsoft Exchange Transport cannot RMS decrypt the message. 550…