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RE: [cobalt-users] Reverse lookup when connecting through FTP... Usefull?
- Subject: RE: [cobalt-users] Reverse lookup when connecting through FTP... Usefull?
- From: "Dan Kriwitsky" <webhosting@xxxxxxxxx>
- Date: Mon Jan 15 12:31:19 2001
- List-id: Mailing list for users to share thoughts on Cobalt products. <cobalt-users.list.cobalt.com>
> Can someone say why it is useful that a reverse lookup is being done when
> accessing through FTP.....
> Same when getting e-mail......
>
On email, the reverse lookup on the DNS stops a lot of Spam by refusing mail
from nonexistent domains.
> MAIL FROM: <dan@xxxxxxxxxxx>
501 <dan@xxxxxxxxxxx>... Sender domain must exist
--
Dan Kriwitsky