Re: [Exim] Fake mailing

Hi Gergely, on Wed, 5 Nov 2003 13:42:30 +0100 you wrote:

> I have try to find description about exim n' "fake mailing" telnet host
> 25

There is no such distinction between a "faked with telnet" and "real" mail
session. They're both just TCP connections. Your Exim daemon has no idea
whether the entity on the other end of the connection is someone with a
telnet client or an MTA.

If what you're actually getting at is "what's the best way to stop
direct-to-MX spam", then the answer will depend on what you want to do
exactly, what policies you're willing to enforce, and what you do
currently in terms of RBL-checking etc. There are many discussions in the
list archives (and elsewhere) of everything under the sun from basic DNSBL
checks, through checking HELOs to making assumptions about the presence of
certain strings in the reverse DNS for a connecting host.


Tim