How is relaying configured? Are you allowing from a certain IP range,
username and password authentication, or both? Have you tried using a packet
sniffer to see if the spammer is using username and password authentication?
You could be right: the spammer could be exploiting an "unknown"
vulnerabili...
username and password authentication, or both? Have you tried using a packet
sniffer to see if the spammer is using username and password authentication?
You could be right: the spammer could be exploiting an "unknown"
vulnerabili...
[ more ]