@4000000046b09f1c1ba9719c CHKUSER rejected relaying: from <[EMAIL PROTECTED]::> remote <www.domain.net:unknown:192.168.1.10> rcpt <[EMAIL PROTECTED]> : client not allowed to relay
What does your tcp.smtp show, and are you using SMTP-AUTH?
smime.p7s
Description: S/MIME Cryptographic Signature
