I've setup an snmp/pop3 round-trip sensor. The sensors sends email through the a local mail server to a Gmail mailbox.
Recently I have been getting this error message at random times: "Connecting to POP3 Server: service exception: DNS error"
The problem resolves itself before comming back again.
Any idea for the cause? Also, the pop3 response time is always this high? 300,000ms and more..