sly spamers feed up !!!!

[Kornyakov Yevgeniy]

Hi !
can anybody help to me ?
I use  rcpthost file and record
192.168.:allow,RELAYCLIENT=""
for smtp rules
This rules work OK !

But If spamers try send message to my network
from  anywhere I can not block them (only via badmailfrom),
but spammer  change  often mail from:  record



How I can allow relay only for particular IP addresses
except letters to my network ??

Thanks


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Regards.
Kornyakov Yevgeniy
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ICQ 84686284
TexaKaBank
Tel +7 3272 349954