Im having a big problem.....some jerk is sending a lot of spam mail to my domain....the mails come from @gmail.com and always the mail is sent to 10 or 15 people from my domain(each mail that limit). If a mail with more than 6 recipients @mydomain.co...

Im having a problem...i have a C100 Ironport appliance and i want to know via command line, how to grep and see mails that never went delivered.For example...i know that someone, like pedro@pedro.com send to my exchange server an email...but in excha...