Re: [Assp-user] outbound mail checked for penalty trap?

[Fritz B. <fb...@iw...>]

>The sender is from @yantis.com, Yantis.com is an local domains.
>172.25.0.17 is our exchange server

Relaying is allowed for IP's that match those in the "Accept All
Mail." That a mail claims to be from one of your local domains does
not allow it to be relayed -- this is easily spoofed and not useful as
a security measure.

If your clients dialup or are dynamically assigned from an untrusted
pool, then the only reliable way to allow relaying is through
AUTHENTICATED smtp, and your mail handler must support this type of
authentication, and you must enable it in your clients. ASSP
recognizes authenticated connections and allows them to relay.