POP3 is not working in Microsoft Exchange Server

POP3 is not working on Microsoft Exchange Server

Check POP3 service Status:

Open Exchange Powershell and run the below command;

Server	Component	State
SERVERNAME	ServerWideOffline	Active
SERVERNAME	HubTransport	Active
SERVERNAME	FrontendTransport	Active
SERVERNAME	Monitoring	Active
SERVERNAME	RecoveryActionsEnabled	Active
SERVERNAME	AutoDiscoverProxy	Active
SERVERNAME	ActiveSyncProxy	Active
SERVERNAME	EcpProxy	Active
SERVERNAME	EwsProxy	Active
SERVERNAME	ImapProxy	Active
SERVERNAME	OabProxy	Active
SERVERNAME	OwaProxy	Active
SERVERNAME	PopProxy	Inactive
SERVERNAME	PushNotificationsProxy	Active
SERVERNAME	RpsProxy	Active
SERVERNAME	RwsProxy	Active
SERVERNAME	RpcProxy	Active
SERVERNAME	UMCallRouter	Active
SERVERNAME	XropProxy	Active
SERVERNAME	HttpProxyAvailabilityGroup	Active
SERVERNAME	ForwardSyncDaemon	Active
SERVERNAME	ProvisioningRps	Active
SERVERNAME	MapiProxy	Active
SERVERNAME	EdgeTransport	Active
SERVERNAME	HighAvailability	Active
SERVERNAME	SharedCache	Active

If you see the POP service state is inactive then you we need to set service state back to Active

Run the below command: