One of my friend is having some problem with her mail server and I don't know how to deal with it or how to explain. She does gave me a pcap file, from that I guess some spam problem. But I don't know exactly or sure about this. I hope you guys can point me to the right thing and ensure this.

So, I leave it to you guys if you're willing to help or for those who like thrill. I already upload the file she gave to me here 21april.pcap

Thank you again. I will post my own analysis about this matter soon.