Support for RHSBL ?

[J Doe]

Hi,

I was wondering if SpamAssassin supports custom RHSBL (Right-Hand Side 
Block Lists) ?

The reason I ask is I had a previous mail server running Postfix 3.x and 
I made use of my own RHSBL.  An example of this is with the following:

    /etc/postfix/main.cf
        . . .
        smtpd_helo_restrictions = . . .
            reject_rhsbl_helo rhsbl.dnsxl=127.0.0.[2..11],
                . . .

. . . so reject domain names during HELO via the zone rhsbl.dnsxl served 
by the mail server's DNS.

I read about DNSBL support in the SpamAssassin man notes, which is 
different, but I didn't see if I could wire up my own RHSBL with SA.

Thanks,

- J