## <a name="Web_Notification_on_Changes"> Web Notification on Changes </a>

Each %WIKITOOLNAME% web does an automatic email notification of recent changes. Users can subscribe / unsubscribe themselves in %NOTIFYTOPIC% of each TWiki web. The Perl script <code>**mailnotify**</code> is called by a deamon in regular intervals. The script is sending an automated email to subscribed users in case some topics changed in a web within this interval.

### <a name="Configuring_Outgoing_Mail"> Configuring Outgoing Mail </a>

%WIKITOOLNAME% will use the <code>**Net::SMTP**</code> module in case it is installed on your system. You need to specify the <code>**SMTPMAILHOST**</code> variable in [[TWikiPreferences]].

You can use an external mail program like <code>**sendmail**</code> in case the <code>**Net::SMTP**</code> module is not installed. In this case specify the <code>**$mailProgram**</code> in <code>**twiki/bin/TWiki.cfg**</code>.

### <a name="Call_mailnotify_at_Regular_Inter"> Call <code>**mailnotify**</code> at Regular Intervals </a>

**For Unix platforms:** Edit the cron table so that <code>**mailnotify**</code> is called in an interval of your choice. Please consult <code>**man crontab**</code> of how to modify the table that schedules program execution at certain intervals. Example:

    % crontab -e
    15,45 * * * * (cd ~twiki/public_html/bin; ./mailnotify -q)

The above line will call mailnotify at 15 minutes and 45 minutes past every hour. The <code>**-q**</code> switch suppresses all normal output.

On Windows NT / 2000 you can use a scheduled task.

-- [[PeterThoeny]] - 16 Mar 2001 <br />