Matt wrote:
> I have a few users that have a certain anti-junkmail software. It
> supposeably bounces junkmail. The theory is that the spammer will get
> the bounce and think the email address is no longer valid and remove it
> from there list. I am so sure that happens. In reality most times the
Sturgeon's Revelation.
> Is there anyway to setup Exim so when it sees a return address of "<>"
> and its not addressed to a local user or from exim itself refuse it?
Sure, but you should be very careful about that or you will block
legitimate bounces and probably end up in the rfc-ignorant list. And you
should make sure that none of your clients use a MTA (they could send
valid bounces) or some redirection/notify/vacation/whatever that uses
the empty sender.
If you want your "no spams from local users", you could use in your
acl_check_rcpt:
deny
message = no bounces from clients
senders = :
! domains = +local_domains
Or if your clients do smtp auth:
deny
senders = :
authenticated = *
or some other condition to determine people that should never send
bounces. But please be careful.
