----- Original Message -----
From: "alexandre" <alxgomz@???>
To: "Pete McEvoy" <pete@???>
Cc: <exim-users@???>
Sent: Sunday, October 11, 2009 8:53 PM
Subject: Re: [exim] Filtering outgoing email - need advice
> I have done it in the past and i can tell you filtering outgoing mail
> for spam is just a bad idea
Try googling then. You will find most anti-spam orgs moan about ISPs/ESPs
NOT doing it. If M$,Yahoo,Gmail etc filtered their outgoing, the work of
anti-spammers would be a lot easier.
In theory, for most "normal" non bulk mail customers, filtering outgoing
should be very low overhead compared to the incoming but would hit hard on
spammers using hijacked user accounts. Because some spammers send only a few
spams per user account, relying on volume only as an incator is becoming
less reliable as time goes on.
All the best
Phil
