On Thu, Aug 28, 2003 at 03:36:09PM -0400, Daniel Reich wrote:
>
> Is it possible to reject a mail sender based on the value of the MX
> records set? Not simply whether they exist. The reason is I am
> noticing some spammers publishing my server as their MX record or a
> 127 address.
Do you mean that a spammer is sending out an email with your domain
('example.com') listed in the from, ie '[EMAIL PROTECTED]'?
Or do you mean that the spammer has a 'legitmate' From address
('spamdomain.com') whose MX records list example.com as its mail server?
If its the 2nd then you don't have much to worry about: qmail will
reject them as it isn't in your locals/rcpthosts file.
If its the first then that's called a "joe job" and you can look at the
qmail mailing list for some ideas:
http://marc.theaimsgroup.com/?l=qmail&w=2&r=1&s=joe+job&q=b
http://marc.theaimsgroup.com/?l=qmail&w=2&r=1&s=faked+from&q=b
Chris
