ISMail Logs

ISMail maintains detailed log files of server operation. Log files contain information about server state, messages sent, messages received, retries, DNS lookups, and so forth.

Three kinds of log files are kept: SMTP logs, POP3 logs, and IMAP4 logs. All log files are recorded into the 'mail\logs' sub-directory under the ISMail installation directory.

Log file configuration is controlled under Activity.

SMTP Logs

SMTP information is logged based on its type and the level of detail configured for that type. The types are: server errors, warnings, and system trace information. Server errors are useful for tracking down configuration problems or other failures in sending and receiving mail. Warnings and trace information are primarily useful for developers, but can show details of server operation.

The primary log file is used until it reaches the maximum size, then it is moved to a backup log file and re-written. Multiple backup log files may exist; when the maximum number of backup log files is reached, the oldest backup log file will be replaced.

The SMTP log files are located in the mail\logs directory and begin with 'maillog'.

POP3 and IMAP4 Logs

POP3 and IMAP4 information is also logged according to its type and level of detail. The types are: information (INF).

For each of the POP3 and IMAP4 servers, the primary log file is used until it reaches the maximum size, then it is moved to a backup log file and re-written. Multiple backup log files may exist; when the maximum number of backup log files is reached, the oldest backup log file will be replaced.

The POP3 log files are located in the mail\logs directory and begin with 'ismail-pop3'.

The IMAP4 log file are located in the mail\logs directory and begin with 'ismail-imap4'.