Configure email forwarding for a mailbox
Set-Mailbox -Identity “OnPrem mailbox” -ForwardingSMTPAddress “Office 365 mailbox”
Configure email forwarding for a mailbox
Set-Mailbox -Identity “OnPrem mailbox” -ForwardingSMTPAddress “Office 365 mailbox”
Check MRS endpoint user and password.
Remote Server returned ‘550 5.1.8 Access denied, bad outbound sender’
Solution:
–Non-Office 365 user use this https://sender.office.com (self-service delisting portal) to remove themselves from the blocked senders list.
–Office 365 user, as an admin you can unblock your blocked Office 365 email account via using Exchange admin center.
• Go to the EAC, navigate to protection > action center.
• Select the Search icon and enter the SMTP address of the blocked user.
• Click Unblock Account in the description pane.
• Click Yes to confirm the change.
For more detailed information, please refer to the article: Removing a user, domain, or IP address from a block list after sending spam email
Verified password sync is disabled via using PowerShell
Following cmdlets have been used to verify above and I noticed password sync was in fact disabled although I checked the option in Azure AD connect setup.
Import-Module ADSync
Get-ADSyncAADPasswordSyncConfiguration -SourceConnector <‘LOCAL DOMAIN NAME>
Enabled password sync via PowerShell
Set-ADSyncAADPasswordSyncConfiguration -SourceConnector <‘LOCAL DOMAIN NAME> -TargetConnector <‘xxxxxxx.onmicrosoft.com – AAD’> -Enable $true
thanks to: http://www.tekronin.net/2015/10/09/office-365-woes-password-sync-doesnt-synchronize-with-azure-ad-connect/
Office 365 woes | Password Sync doesn’t synchronize with Azure AD Connect
Error message: 451 4.4.0 Primary target IP address responded with: “451 5.7.3 Must issue a STARTTLS commnd first” Office 365 Hybrid
In some scenarios you might need to, in your firewall: Disable Content Inspection with TLS
more about in:
http://www.moh10ly.com/blog/office-365/emails-between-o365-and-on-premises-do-not-work