RE: [cobalt-users] Can someone point me to sendmail configuration I read here before...

["Dan Kriwitsky" <list1@xxxxxxxxxxxxxxxxxxxx>]

> Ages ago I read on this groups how to configure the RAQ 
> servers to only accept email from servers with valid reverse 
> lookups - this cut down the amount of spam enormously - the 
> only problem, I can't remember how it was done, and I can't 
> find the old post among the enormous amount of related posts 
> to the group... pointer gratefully accepted!
> 

The last part of
http://list.cobalt.com/oldlist/cobalt-users/msg07274.html might be what
you're looking for.
"changes for RAQ1 to deny mail from fake domains or mailservers which
just 
have an IP no.:"

I'm not sure if this will work in newer RaQ's but it probably would.

Thanks for asking the question. I didn't realize this could be done.
Although, I have seen this discussed on the news.admin.net-abuse.email
newsgroup and many admins have reported having to give this up since a
lot of legit senders will not have a proper PTR record and you will
reject some non-spam email.
-- 
C2003 Dan Kriwitsky

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