MailFlow

421 4.4.2 Message submission rate for this client has exceeded the configured limit. In my case Application was using Port 25 and using the app custom connector on load balanced Exchange 2016 servers and message rate limit was set to unlimited. Also verified in load balancer rate limit is set ...

Lets see in a hybrid in Environment. We got to move the transport Rules from On-Premises Server to Office 365. So that transport rules will still work when mail flow hits the cloud for Mail processing. Export XML file from On premises Server – Connect to Exchange Online PowerShell – ...

Lets see what are the Public DNS records we need to Configure for Exchange 2013/Exchange 2016  (Client Access / mail flow / Autodiscover) Create A record – Mail.CareExchange.in and point to the Exchange 2013 Server or Exchange 2016 Server . If the server is load balanced – You will have ...

Suddenly Outgoing mails stopped. with below error Error : Exchange Toolbox – queue Viewer 4.4.0 Primary Target IP Address Responded with: “535 Authentication Credentials invalid.” Attempted to failover to alternate host, but that did not succeed. Either There are no Alternate hosts, or delivery failed to all alternative hosts. Solution ...

Let me explain about the current situation . –  Exchange Transport Service Keeps Crashing “Windows Could not Start the Microsoft Exchange Transport Service on Local Computer. Error 1053 – The Service did not respond to the start or Control request in a timely Fashion.” – Queue Database Will rapidly increase ...

From Office365/Gmail fails to Exchange On-Premises External to Internal Mails 550 Address unknown Anti-spam Sophos UTM 9 NDR From Office 365 to Exchange 2010/2013/2016 On Premises – Original Message DetailsCreated Date:11/8/2016 4:25:50 PMSender Address:test@external.comRecipient Address:user@careexchange.inSubject:Test333Created Date:11/8/2016 4:25:50 PMSender Address:test@external.comRecipient Address:user@careexchange.inSubject:Test333 Error Details Reported error:550 5.0.350 Remote server returned an error ...