For example, to determine the status of a webserver, monitoring software may periodically send an HTTP request to fetch a page; for email servers, a test message might be sent through SMTP and retrieved by IMAP or POP3.
Monitoring software may periodically send an HTTP request to fetch a page. This is for example. This is to determine the status of a webserver. A test message might be sent through SMTP. This was for email servers. This was for example. A test message might be retrieved by IMAP or POP3. This was for email servers. This was for example.