Having an issue with a client sending email (via DirectPC) which happens to be blacklisted (no option of getting a new IP or getting unlisted),,, But here is the issue, according to Mail Watch not all of their email is getting flagged as blacklisted.
Under the "Received Via:" the RBL is NOT marked, but in the SpamAssassin area, "Listed in RBL:" is marked with a "Y"...
Not sure why...
RBL usage in Exim vs MailScanner
Re: RBL usage in Exim vs MailScanner
It may be because the blacklisted IP is not the *last* received header. I think MailScanner only checks the last one, while SpamAssassin looks at all of them.