Roger Håkansson wrote:
> I've noticed that a lot of connections from spammers trying to send mail
> to local users claiming the sender is another local user.
>
> So I want to check that if sender domain name is in sender_local_domains
> the user must be authenticated or host must be in relay_from_hosts.
>
> Does this look correct?
>
> acl_smtp_mail:
> # Accept all authenticated connections
> accept authenticated = *
> # Accept all local hosts
> accept hosts = +relay_from_hosts
> # Deny if sending host claims to be a local user
> deny sender_domains = +sender_local_domains
> message = Fake sender address
> # Accept all other
> accept
Forgot to mention, all other sender/recipient verification is done in
acl_check_rcpt just like the default "configure"
--
Roger Håkansson
