---
title: "MS Outlook Security Updates"
description: "Issue: It has come to our attention that Microsoft has pushed out a Security update to some Outlook users. This has changed the way Outlook communicates with the mail servers, which may affect your..."
url: https://www.inmotionhosting.com/support/email/ms-outlook-security-update/
date: 2015-05-14
modified: 2015-05-14
author: "InMotion Hosting Contributor"
categories: ["Email", "Security"]
type: post
lang: en
---

# MS Outlook Security Updates

| Issue: | It has come to our attention that Microsoft has pushed out a [Security update](https://technet.microsoft.com/library/security/ms15-046) to some Outlook users. This has changed the way Outlook communicates with the mail servers, which may affect your email settings. |
| --- | --- |
| Status: | This has currently been addressed on all servers. (You may have adjust your settings as described below) |
| Who is impacted? | Some Microsoft Outlook email users. |
| Why is this happening? | Microsoft has released an important security update ([Microsoft Security Bulletin MS15-046](https://technet.microsoft.com/library/security/ms15-046)) with fixes for many versions Outlook. This is to address security vulnerabilities, and may require you to use specific email settings. |

## **Update: 5/19/2015

This has been addressed on all InMotion Hosting servers at this time. You may have to adjust your port settings as described below.

## What should I do?

**Your *port* settings depend on your specific setup:**

- **If you use SSL explicitly:** incoming = 993 outgoing = 465
- **If you use TLS Explicitly:** incoming = 143 outgoing = 587
- **If you use Auto:** incoming = 143 outgoing = 587