We have a situation (This very moment) where our clients Exchange Server is being flooded with outgoing emails (Ebay messages) and they are not being sent by the client (i.e. the client is not purposely sending these messages)
As we speak the outgoing SMTP que has gone up by a couple of thousand email messages waiting to be sent (I say waiting because we have disabled the outgoing email.)
What is this? As far as I know they are not a an open relay and email is sent through a smart SMTP host.
ANy assitance would be a help.
Thank you and Regards