Hi,
Welcome to the Microsoft Q&A forum.
Did you refer to these links:https://learn.microsoft.com/en-us/exchange/clients/pop3-and-imap4/configure-pop3?view=exchserver-2019&source=recommendations,https://learn.microsoft.com/en-us/exchange/clients/pop3-and-imap4/configure-authenticated-smtp?view=exchserver-2019&source=recommendations
And based on my personal experience, the steps might be:
Enabling POP and IMAP Services:
- Open the Exchange Admin Center (EAC):
- Navigate to
https://<YourExchangeServer>/ecp
and log in with your admin credentials.
- Navigate to
2.Enable POP and IMAP services:
- Go to Servers > Servers.
- Select the server you want to enable POP on and click Edit (the pencil icon).
- In the server properties window, go to POP3 and IMAP and enable the services. Make sure both services are started.
- Repeat the same for IMAP if you need it.
- Configure Authentication Settings for POP and IMAP:
- Go to Servers > Virtual directories.
- Select POP3 (or IMAP4) and click Edit.
- Under Authentication, choose the authentication method you prefer (e.g., Plain text login, SPA).
- Ensure that the settings match the requirements for your clients.
Enabling SMTP Access:
- Open Exchange Management Shell (EMS):
- Run
Get-ReceiveConnector
to list all receive connectors.
- Run
- Create a New Receive Connector for SMTP:
New-ReceiveConnector -Name "External SMTP" -Usage Custom -Bindings 0.0.0.0:587 -RemoteIPRanges 0.0.0.0-255.255.255.255
- Configure Authentication and Permissions:
- Set permission groups for the new connector:
Set-ReceiveConnector "External SMTP" -PermissionGroups AnonymousUsers,ExchangeUsers,ExchangeServers,Partners
- Enable basic authentication:
Set-ReceiveConnector "External SMTP" -AuthMechanism BasicAuth
- Restart Services:
- To apply changes, restart the Microsoft Exchange POP3, Microsoft Exchange IMAP4, and Microsoft Exchange Transport services:
Restart-Service MSExchangeTransport
Restart-Service MSExchangePOP3
Restart-Service MSExchangeIMAP4
Configuring User Settings:
- Ensure the user has the appropriate mailbox settings:
- In the EAC, go to Recipients > Mailboxes, select the mailbox, and click Edit.
- Go to Mailbox features and ensure that POP3 and IMAP4 are enabled for the mailbox.
Client Configuration:
- Outlook or other mail programs:
- Use the following settings in the email client:
- Incoming mail server (POP3):
mail.yourdomain.com
- Outgoing mail server (SMTP):
mail.yourdomain.com
- Authentication: Your username (usually the email address) and password.
- Encryption: Choose SSL/TLS if your server requires it.
- Incoming mail server (POP3):
- Use the following settings in the email client:
- Port settings:
- POP3: Typically port 995 (SSL) or 110 (non-SSL).
- SMTP: Port 587 (TLS/STARTTLS) or 25.
Please feel free to contact me for any updates.And if this helps,don't forget to mark it as an answer.