SMTP<< mail from:<x@y>
spool directory space = nnnnnK inodes = nnnnn check_space = 10240K inodes = 100 msg_size = 0
log directory space = nnnnnK inodes = nnnnn check_space = 10240K inodes = 100
SMTP>> 250 OK
SMTP<< rcpt to:<userx@test.ex>
SMTP<< mail from:<x@y>
spool directory space = nnnnnK inodes = nnnnn check_space = 10240K inodes = 100 msg_size = 0
log directory space = nnnnnK inodes = nnnnn check_space = 10240K inodes = 100
SMTP>> 250 OK
SMTP<< rcpt to:<userx@test.ex>