Re: backscatter

K bharathan wrote:
> the following is the log from my gateway to a subdomain;  there are lot 
> <> sender mails are going; is it backscatter?;  some are rejected on the 
> basis of header-checks; the owner of the subdomain has got a mail 
> server; how can i prevent this

It becomes backscatter if the recipient server rejects the mail and 
you're stuck with it.  So the solution is simple: don't relay mail for 
someone who doesn't accept all mail from you.  Or work with them so that 
you have the same header checks and other criteria, so that your server 
will refuse to accept anything that their server will reject.

Still, on their side, if they have a relay in front of them, they should 
be accepting all mail from the relay and discard stuff they don't want, 
instead of rejecting it.

--kj