--On 18 November 2009 02:53:30 -0800 mkp_71 <mkp_71@???> wrote:
>
> Anyone? How to reject empty return path, it's look like this:
>
If you're having problems with spam blowback, then there are better things
that you can do. As others have said, you shouldn't reject on an empty
return-path.
However, you read
<
http://en.wikipedia.org/wiki/Bounce_Address_Tag_Validation> for an
alternative solution. Beware, it doesn't play well with Exim vacation
messages, for example.
Also, you might like to rate limit the number of bounce messages per
recipient. Make sure your limits correspond to the amount of outbound mail,
though.
Finally, if you reject on an empty return path before the DATA command, you
may find yourself unable to send messages to sites that use sender
verification callouts.
You may be able to reduce the amount of bounces you get by publishing SPF
records.
--
Ian Eiloart
IT Services, University of Sussex
01273-873148 x3148
For new support requests, see
http://www.sussex.ac.uk/its/help/
