# SMTP synchronization checks before sending responses
need_ipv4
#
exim -DSERVER=server -DACL_PREDATA=check_predata -bd -oX PORT_D
****
# The pause (+++ 1) in the middle of this is so that there is no pending
# input when DATA is received, but we start sending the data itself too
# early (the server will be waiting 2 seconds in the predata ACL).
#
client -t5 127.0.0.1 PORT_D
??? 220
ehlo abcd
??? 250-
??? 250-
??? 250-
??? 250
rset\r\nmail from:<userx@test.ex>\r\nrcpt to:<userx@test.ex>\r\ndata
+++ 1
Start: sent early ...
??? 250
??? 250
??? 250
??? 554
****
sleep 1
killdaemon
# This time turn off pipelining to check MAIL and RCPT
exim -DSERVER=server -DACL_MAIL=check_mail -DACL_RCPT=check_rcpt -DPAH= \
     -bd -oX PORT_D
****
client -t5 127.0.0.1 PORT_D
??? 220
ehlo abcd
??? 250-
??? 250-
??? 250
mail from:<userx@test.ex>
+++ 1
rcpt to:<userx@test.ex>
??? 554
****
client -t5 127.0.0.1 PORT_D
??? 220
ehlo abcd
??? 250-
??? 250-
??? 250
mail from:<userx@test.ex>
??? 250
rcpt to:<userx@test.ex>
+++ 1
data
??? 554
****
killdaemon