Hi, > maps_rbl_domains (default: empty) > > Obsolete feature: use the reject_rbl_client feature instead.
Yes, that was why I was asking. It's a really old version of postfix I'm still using on this host for now, until I can migrate to an entirely new server and at the same time keep this one running. I just wanted to confirm that this feature, or an equivalent, isn't available in old versions of postfix? Thanks, Alex