deny ip/domain question

[gben]

i am using /etc/mail/deny file as a blacklist to block spammers. however, i find that for example this doesn't work:

200 550 Reject

but this works:

200.64 550 Reject

the same with domains. this won't work

kr 550 Reject

but this works:

co.kr 550 Reject

can anyone in the know please explain? thanks!

 

[dbase77]

HI,

have you try put dot (.) after 200 and before kr? eg

200.

.kr

regards,
feroz