Forum Discussion

Deleted

Sep 20, 2018

Solved

Is the traffic from the Outlook iOS App still redirected to the US servers?

Hello Everyone, while Exchange was still in power, the Outlook iOS App used to redirect the email traffic first in the US servers, for indexing, then came to ours (in Europe). Now it's all in the...

office 365

VasilMichev
Sep 20, 2018
This is no longer the case, the new Outlook architecture doesn't use such redirect: https://docs.microsoft.com/en-us/exchange/clients-and-mobile-in-exchange-online/outlook-for-ios-and-android/outlook-for-ios-and-android#outlook-for-ios-and-android-architecture

Deleted

Sep 21, 2018

Great to hear, thanks!

Tom8010

Copper Contributor

Jun 04, 2019

Deleted

Apparently all IOS Outlook, IMAP traffic is redirected through Microsoft servers in the Netherlands. I have the following IP here in the IMAP server logs, for example: 52.125.141.18

The problem is:

a.) From a security standpoint this is questionable and

b.) I have a problem with a particular IMAP provider here in Austria. While the Desktop PC Outlook connects without problems, the IOS Outlook using IMAP traffic redirection over the Netherlands causes a weird authentication problem.

Any ideas anyone how to solve that? Why does MS redirect the IMAP traffic at all?

Thanks // Tom

diglinks
Copper Contributor
Aug 07, 2020
I too have the same issues Tom8010

Today updated my Outlook IOS client and while testing, noticed that the mail traffic is routed through Microsoft network
My Email IMAP Server is managed by myself.

Same test with iPhone Mail client, the traffic goes directly to my Mail Server.

Is there a way to stop this behaviour?

Thanks in advance,
Badri