Hi @Germain,
Welcome to the Microsoft Q&A platform!
I'm sorry to hear you're having trouble with the POP3 service on Microsoft Exchange Server 2019. Here are some steps you can follow to troubleshoot and resolve the issue:
- Ensure that all necessary services that POP3 depends on are up and running. For instance, the Microsoft Exchange Active Directory Topology service must be running.
- Verify that the POP3 service is correctly configured. Double-check the settings in the Exchange Admin Center (EAC) or use the Exchange Management Shell (EMS) to verify configurations.
- Ensure that the ports used by the POP3 service (generally 110 for standard POP3 and 995 for secure POP3) are not being blocked by a firewall or used by another service.
- Make sure that the credentials and authentication methods configured for the service are correct and have the necessary permissions.
- Ensure that your Exchange Server and all related software are up to date with the latest patches and updates.
- Check the configuration files for any errors or misconfigurations. Sometimes manual edits can cause problems. Here's an example of a command you can use in the Exchange Management Shell to check the POP3 settings:
This will display the current settings for the POP3 service. If you see anything unusual, you may want to reset it to default values and try starting the service again.Get-PopSettings | Format-List
- Sometimes, a simple server restart can resolve issues with services not starting correctly.
Please feel free to contact me if you have any queries.
Best,
Jake Zhang