Re: sender_host_reject_bydns

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Author: Philip Hazel
Date:  
To: Stuart Lynne
CC: exim-users
Subject: Re: sender_host_reject_bydns
On Wed, 18 Dec 1996, Stuart Lynne wrote:

> I wonder how many mail admins would point their mail server at
> blacklist.aol.com if it was available? Heck, if it was accurate
> many companies might even pay for the privilege.


I've received the following private message, and have got permission to
repost it here:

Date: Wed, 18 Dec 96 09:25 GMT
To: ph10@???
Subject: Re: sender_host_reject_bydns

You can always set the TTL really low on this Zone to allow rapid updates.

The one disadvantage that I can see, is that people outside your site may be
able to see the blacklist data. The Spammers may then use this to create new
accounts which aren't (yet) blocked.

I think the second point is particularly valid. However, you could try
running a private Zone to keep the information local. Anyway, I will
certainly look into the facility, because I can see other uses for it.

--
Philip Hazel                   University Computing Service,
ph10@???             New Museums Site, Cambridge CB2 3QG,
P.Hazel@???          England.  Phone: +44 1223 334714