Later on, Apple rolled out a minor firmware update that contains the required fix through iOS 11.0.1 and later versions. Those who used the Mail app to sync data from Exchange Server 2016 that’s running on Windows Server 2016 were advised to disable HTTP/2 in Windows Server. The first workaround provided by Microsoft was to download the free Outlook for iOS client from the App Store and used that instead since it already has full support to various email services including, Office 365, and Exchange Server 2016. As a result, email accounts hosted by Microsoft on, Office 365, or Exchange Server 2016 running on Windows Server 2016 were no longer compatible with Apple’s Mail app in iOS 11. It turned out that the iOS 11 update had brought conflict between the stock Mail app and the Microsoft email servers. This was in response to the prevalent complaints raised by iPhone users who were prompted with an error message that says, Cannot Send Mail.
In the previous months since the iOS 11 rollout, Apple and Microsoft had collaborated in working on a fix for the stock Mail app conflict with Microsoft Exchange and servers. What causes email problems to occur on your iPhone 6s Plus? If we did, try to use the solutions we suggested and if they won’t work, then you may contact us by filling up this form.
We list down every problem we address each week in that page so try to see if we’ve already addressed your concern before. Feel free to refer to this walkthrough when needed.īut before anything else, if you have a different issue with your device, visit the troubleshooting page we’ve setup for the iPhone 6s Plus. This post will walk you through some step-by-step solutions that are used to deal with email errors on an iPhone. However, if you haven’t gone through an upgrade yet already encountered errors while attempting to send or reply to emails from Microsoft Outlook or Exchange servers on your iPhone 6s Plus, then it denotes that something needs to be fixed on your device, Mail app, or email account in use. Apparently, it’s a software bug that needs to be addressed by Apple. Several iPhone users have been complaining about a problem in which the native Mail app cannot send or reply emails from the aforementioned hosts or email accounts after upgrading to iOS 11. If your iPhone is having trouble sending or replying to emails on your iPhone 6s Plus using, Office 365, or Microsoft Exchange in iOS 11.0 Mail app, then you’re not alone.