EV12.3 SMTP 45824 Only one usage of each socket address (protocol/network address/port) is normally

Hello,

In process of configuring EV SMTP Journal Archiving. After we applied certificate, we get below error in eventlog. After error, EV SMTP Service stops. Any ideas?

Description:
The Enterprise Vault SMTP service reported the following event:

Description:
The Enterprise Vault SMTP service reported the following event:F-MTA_SMTP-ListenError Error on listener;
IOevent-IOerror Error occurred on connection in bind;
System-WSAEADDRINUSE Only one usage of each socket address (protocol/network address/port) is normally permitted. Internal details: [identity: 101 severity: 13 level: 13 facility: 102 id: -798621595]

 thx. GJ