Hi
My exchange server couldn’t send some e-mails to the internet -usind DNS for resolution- since some remote smtp server respond with error 550 “SPAM detected” or “Relay detected”.
The work arround I found is to reconfigure my exchange to useour ISP exchange to relay outgoing messages instead of sending them directly to the recipient SMTP server.
Is there a way to know if my Exchange server is being used for spam relay?
Is there a list of spams / relays servers / If my exchange isin that list, how can i make to take it out of it?
Regards
Alvaro
