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Iphone gives error when syning with Exchange 2016 - Mail to large, connection to server failed

Hello,

I just migrated from SBS 2011 to a server 2012, all went well but after migrating from Exchange 2010 to Exchange 2016 the IPhones connected to Exchange give an error when retrieving mails. The setup works, the mails/agenda/etc are syncing perfectly on a first look but after a few second the Iphone says it cannot connect to the server to retrieve the mail. But after a second longer the mails are syncing. When sending a mail from the Iphone it gives an error: server denied the message because it it so large.

Any ideas?

Benderama

ASKER

I think I solved it by setting:

Windows PowerShell
Copyright (C) 2012 Microsoft Corporation. All rights reserved.

PS C:\Windows\system32> C:\Windows\System32\inetsrv\appcmd.exe set config -section:system.webServer/serverRuntime /uploa
dReadAheadSize:"10485760" /commit:apphost
Configuratiewijzigingen in sectie "system.webServer/serverRuntime" zijn toegepast voor "MACHINE/WEBROOT/APPHOST" op conf
iguratieopslagpad "MACHINE/WEBROOT/APPHOST"
PS C:\Windows\system32> C:\Windows\System32\inetsrv\appcmd.exe set config "Default Web Site" -section:system.webServer/s
erverRuntime /uploadReadAheadSize:"10485760" /commit:apphost
Configuratiewijzigingen in sectie "system.webServer/serverRuntime" zijn toegepast voor "MACHINE/WEBROOT/APPHOST/Default
Web Site" op configuratieopslagpad "MACHINE/WEBROOT/APPHOST"
PS C:\Windows\system32>

Can anyone comfirm this was the correct solution?

Benderama

ASKER

Sorry, spoke to soon, the problem is not fixed.

Can anyone help?

Davis McCarn

Did you find this?
https://support.apple.com/en-us/HT203719

ASKER CERTIFIED SOLUTION

Benderama

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Benderama

ASKER

it worked