# Forcing verify failures for specific senders need_ipv4 # exim -bh V4NET.0.0.0 mail from: rcpt to: data . quit **** exim -bh V4NET.0.0.0 mail from: rcpt to: data . quit **** exim -bh V4NET.0.0.0 mail from: rcpt to: data . quit **** no_msglog_check