Troubleshooting Mail Delivery Problems 121

a period of time. You can view the Mail Transport logs to see the relevant messages that may indicate why you cannot connect to that particular mail server. The server could be down, too busy, or not currently accepting connections.

Examining Log Files Examine the system log files in the Reporting -> System Logs screen. The Mail Transport log is the most important as it provides a detailed description of each message that passes through the system.

The start of a single message log entry begins with an smtpd “connect” message, and ends with the “disconnect” message. To ensure that you are looking at the entries for a specific message, check the message ID, such as 6D3872B1D8.

A summary of the actions for this message are included in the log. In the following example, the message was quarantined because of a virus:

Final action: Quarantine, Antivirus

Anti-Virus: Kaspersky virus=1

Malformed: no Attachments: off, White/Black List: no match

DCC: passed STA: metric=99, spam=yes OCF: off RBL: off