git: 9front

ref: ddece7740e4e4b29f6c906844613f971f7b63af9
dir: /sys/src/cmd/upas/smtp/

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