Have just setup exchange 2010 and PVS pop3 collector
on 2008 server 64bit.
When I try to collect mail from the POP mailbox and then the collector tries to login the exchange server via SMTP ( local IP )
I get a SMTP error 550: command failed because server is listed as open relay or user mailbox unavailable.
Only seems to be able to get mail from himself or other domain users .
Could it be a policy setting?
I have enabled SSL, TLS.
Changed username to domain username , other SMTP addesses in user settings.
nothing seems to allow the SMTP to accept the email from the pop colector.