# senders check while verifying need_ipv4 # exim -bh V4NET.0.0.0 mail from: rcpt to: rset mail from: rcpt to: quit **** exim -DSERVER=server -bd -oX PORT_D **** client HOSTIPV4 PORT_D ??? 220 mail from: ??? 250 rcpt to: ??? 250 rset ??? 250 mail from: ??? 250 rcpt to: ??? 250 quit ??? 221 **** killdaemon