IMAP round trip sensor talking to Exchange 2007 server. Gets "Unexpected connection drop (code: PE039)" No test email is received.
Plain SMTP with mail delivery sensor does not work either so I suspect it may be the same problem.
Telnet tests from machine that is running probe (it is the local probe PRTG itself doing the test) works fine; mail can be delivered.
I am using the beta version: PRTG Network Monitor V8
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