Sam,
I suppose that all rejects are sent back as temporary failures. Is it
possible to select specific ones and send back as permanent? For
example, I have two spam sites that pound my server daily over several
years. Do you think sending back permanent errors will dissuade these
sites or
Actually, temporary rejections are only sent when the rejection could be caused
by a DNS failure or timeout. Everything else is permanent. Specifically,
these filters send permanent error codes:
dns-blacklist-entry
dns-blacklist-file
filter-level
