git: 9front

ref: a51a7f77f84fdbd02b9e664578c300702b5a7900
dir: /sys/src/cmd/upas/smtp/

greylist.c
mkfile
mxdial.c
rfc822.y
rmtdns.c
smtp.c
smtp.h
smtpd.c
smtpd.h
smtpd.y
spam.c