Question : Help! Sendmail queue is getting hammered with spammers

We have over 16000 mail items in our queue. Someone is spamming us and I have no idea how to determine who or what IP is doing this.

Can someone help me with some commands in sendmail to see who is doing this?

Answer : Help! Sendmail queue is getting hammered with spammers

The file you need to look in is:

/var/log/maillog

Get the message ID from of of the spam messages in the queue (by typing "mailq" to display the queue) and then search for that ID in the maillog file. You'll see the IP address in the log entry.