Alex,
The problem is our MTA is a gateway. It handles the traffic for
m25lib.ac.uk, psi.org.uk etc. It does not have local users. Depending
on various rewrite rules, it just passes the mail to some other (less
powerful) host.
So the ACL you have suggested will not work easily.
- Sujit
>-----Original Message-----
>From: Alex Lomas [mailto:alex@alexlomas.com]
>Sent: 13 February 2004 14:27
>To: Sujit Choudhury; exim-users@???
>Subject: RE: [Exim] How to deal with 10 fold increase in mail traffic
>
>
>>1. Spammers sending e-mails from various addresses to various
>>addresses
>with the sender's
>>address as XYZ@???. XYZ is a random string.
>
>Are the email addresses legitimate? If they are truly random,
>then could you not just verify that the users exist before
>accepting delivery? That way you wouldn't then need to accept
>the mail and then bounce it.
>
>Something like:
>
> accept domains = +local_domains
> endpass
> message = Unknown local user
> verify = recipient
>
>In your SMTP ACL should do the trick.
>
>
>
