--On Tuesday, December 05, 2006 12:02:21 -0500 "Eric B." 
<[EMAIL PROTECTED]> wrote:

| > You don't relay for your ISP, you only accept for local delivery
| I don't understand at all - I don't get what this setting is about?  Does
| anyone ever relay for their ISP?  Isn't it the other way around, where
| the  ISP relays for you?

Precisely.  So you don't put sources which will require relaying in ispip. 
ISPIP is for connections that can legitimately relay TO you, and NOTHING 
else  as the documentation says -- it's for your ISP and your MX hosts to 
bypass RBL and SRS checks and you should omit your ISP if they do not act 
as an MX secondary for you.  As spammers target low priority (bigger 
number) MX hosts you probably should arrange to not have any MX secondaries 
(even from your ISP), so ISPIP can be set to 'none' which of course will 
not match any ip address

All other mail will either be

a mail *from* your users which you will relay to their addressees, either 
local or remote, so it should be authenticated ideally.  Acceptallmail is 
for when you don't have adequate control to require authentication when 
your users submit outgoing mail -- you can put their IP addresses there and 
live with the risk of their systems becoming part of a botnet

b Incoming mail *to* your users which you will deliver locally (or relay 
using SRS or equivalent sender changing system eg a mailing list).  This 
will not be authenticated

-- 
Andrew Macpherson,
OA5.com Ltd. The Red Lion #5. Much Hadham. Herts SG10 6DD. GB
Phone +44 1279 843147 GSM +44 78999 61797 Fax +44 7092 052800
http://www.oa5.com/   OA5 is a member of ISPA-UK

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