Hide/unhide from Global Address List Office 365 not working Open PowerShell

 Open PowerShell

Hide:
Set-ADUser adusername -Replace @{msExchHideFromAddressLists=$true}

Unhide:
Set-ADUser adusername -Replace @{msExchHideFromAddressLists=$false}

How to delete emails older than a date for a user on Microsoft exchange server 2010?

https://learn.microsoft.com/en-us/answers/questions/260576/exchange-server-2010-delete-mail-from-all-mailboxe

How to set up DKIM on MS Exchange Server?

How to set up DKIM on MS Exchange Server?

 https://www.emailarchitect.net/domainkeys/kb/dkim_exchange_2007_2010_2013.aspx

 

Exchange Online limits

Exchange Online limits

How to set Email app on mobile phone to access exchange email system

How to set Email app on mobile phone to access exchange email system?

Incoming:

IMAP
webmail.xxxxxx.com
security type: none
port: 143

Outgoing:
smtp.bellnexxia.net
security type: none
port 25
require sign-in: no

Outlook certificate problem

When opening MS Outlook 2010, it pops up a small dialogue box saying certificate problem. You click Install to install the certificate, but it still pops up.

Solution: Go to Control Panel | Mail, remove the profile. Re-create a new profile. Certificate problem is gone.

'Assign Services to Certificate' menu item would not appear when installing MS Exchange certificate

'Assign Services to Certificate' menu item would not appear when installing MS Exchange certificate


Cause: When you create new Exchange certificate, you did not clear the tick mark in front of 'Outlook Web App is on the Intranet'.

Solution: Clear the tick mark.