Hi,
I am experimenting with setting maps_rbl_reject_code to 454 to cause XBL
clients to defer instead of bounce requests, in the thought that zombied
hosts will not retry anyhow and legitimate senders who are compromised
will have a chance to get themselves delisted.
However, although I have "maps_rbl_reject_code = 454" and I'm rejecting
with "smtpd_recipient_restrictions = check_client_access
hash:/etc/postfix/relay_hosts, check_recipient_access
pcre:/etc/postfix/valid_domains, reject_rbl_client bl.dnsbl,
reject_unauth_destination", I'm still seeing "reject... 554 5.7.1" in
the logs and clients are still getting bounce'd instead of retry'd.
I'm sure I'm doing something stupid. At least one thing... maybe more!
Thanks for your time,
Aaron Bennett
Clark University ITS
