With the constant rise in spam, I have made changes to our Plesk-enabled servers to reduce the relaying of spam through the server.
Please make sure you or your clients have the setting "Outgoing Mail Server Requires Authentication" checked in their settings for their mail client.
Again, I have made this server change to attempt to reduce the amount of spam flowing through the server.
Regards,
Shannon Cox
407-814-1942
Friday, February 1, 2013