Finding from ip of a message in queue

Hi, How can I find the ip from which a message in my logs came from ? for example I have a log entry... info msg 2408451: bytes 58267 from <[EMAIL PROTECTED]> qp 15122 uid 1014 starting delivery 24916: msg 2408451 to local [EMAIL PROTECTED] status: local 1/10 remote 0/20 delivery 24916: success: di

Disabling smtp relay for a user

Hi, How can I disable smtp relaying for a particular user? I know that I can use "accountStatus" to disable pop/imap access, but this particular user has been sending spam and as a first step I want to disable their smtp relay. needless to say I am using auth_smtp from qmail-ldap. regards, raj