Exchange Server Configuration

Exchange Server Address

The hostname or IP address of the Microsoft Exchange Server that POPcon delivers emails to via SMTP (e.g., exchange.local or 127.0.0.1).

IP Port

The SMTP port on the Exchange Server. Default is 25. Change this if your Exchange Server uses a non-standard SMTP receive connector port.

Allow StartTLS

When enabled, POPcon attempts to upgrade the SMTP connection to Exchange using StartTLS encryption. The Exchange Server must have a valid certificate and support the STARTTLS command.

Timeout

Maximum time in seconds to wait for a response from the Exchange Server during SMTP delivery. Increase this value if you experience timeouts with large emails or a slow network connection.

Retry Interval

Time in seconds to wait before retrying delivery to the Exchange Server after a failed attempt.

HELO Domain

The domain name POPcon sends in the SMTP HELO/EHLO command when connecting to the Exchange Server. This should match a domain recognized by your Exchange configuration.

Postmaster Address

The email address used as the envelope sender (MAIL FROM) when POPcon delivers emails to Exchange. This address receives non-delivery reports and bounce notifications.

Notification Options

• Spam rejected: Send a notification to the postmaster when an email is rejected by the antispam filter.
• Unknown address rejected: Send a notification to the postmaster when an email cannot be delivered because the recipient address does not match any Exchange mailbox.
• Moved to BADMAIL: Send a notification to the postmaster when an email is moved to the badmail folder due to a virus detection or repeated delivery failure.

Test Settings

Click this button to verify the SMTP connection to the Exchange Server. POPcon will attempt to connect, authenticate, and send a test HELO/EHLO command to confirm that delivery is possible.