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Debug iOS connectivity options?

I have a user w/ an iPhone 8. After upgrading to 19.5 his phone stopped working. It was connected via activesync/exchange. After the update I removed the domain in his configuration and it no longer appears to connect.

I have change password. Removed/readded him to ActiveSync. Rebooted his phone. Reset Network Settings on his phone. Updated to latest version. I have tried to login as me. IMAP works ok. CalDAV and Exchange options do not work. I tried on Wifi and on his cell service. IMAP seemed to not be able to confirm that the settings were correct and I needed to "Save Anyway" - but it works.

Here is the rub: I have other users working ok at the moment. Because it is just his phone I have to think it is his phone and not his account or anything like that. However: His phone was working prior to the update to 19.5. His access to other calendars and accounts appear to be functioning without issue.

So it REALLY feels like something is wrong with his phone BUT it only started once I updated to 19.5? Coincidence perhaps?

I am wondering if there are any suggested steps to debug connectivity from his device to the servers. ActiveSync and CalDAV are all running on IIS.

Thanks!!

(older msg: 13)

Jim Aguiar - Nov 19, 2019 10:16 am (#14 Total: 15)

Jim Aguiar

Newbie
Posts: 75

Specifically: The IP was on the Trust IP List but Dynamic Screening started blocking it after the 19.5 update w/ the ActiveSync domain/login bug. iOS devices on the wifi of this network were continuously trying to login with valid credentials but due to the bug they were trying to be authenticated as user@domain.com@domain.com. Due to the excess authentication errors Dynamic Screening blocked the IP. Once the IP was added to the whitelist the problem went away.

The ActiveSync domain/login bug was fixed in 19.5.1.

Arron.Caruth@mdaemon.com - Nov 19, 2019 1:21 pm (#15 Total: 15)

Guest User

Posts: 1

I’ve been doing some more testing on this and found a bug that may have caused at least part of your issue.

Do you have a trustedip.dat file in the MDaemnon\data directory?

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Subject: [md-support] Debug iOS connectivity options?

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support please use the form here:
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