How can I stop spammers from using my SMTP server to send out their crap?
Today when I came into work I saw a crapload of returned mail notifications containing lists of email addresses which I know I never sent mail to. I am assuming some spammer get into my Sendmail server and sent away.
Running Sendmail 8.9.3
Thanks
-al
Today when I came into work I saw a crapload of returned mail notifications containing lists of email addresses which I know I never sent mail to. I am assuming some spammer get into my Sendmail server and sent away.
Running Sendmail 8.9.3
Thanks
-al